Bitcoin Forum

(Review/Guide) BW.com BW-L21, 550 Mh/s, 950W Litecoin (scrypt) ASIC miner
Disclaimer: I was able to buy one BW-L21 miner with an agreement to do a review here at the forum.
Nicehash was the pool used for hashrate testing.
https://i.imgur.com/OtfVTqs.jpg (https://i.imgur.com/OtfVTqs.jpg)
Click for a bigger version. Picture copyright (c) BW.com.

1) General information, other items needed
2) Unpacking
3) Overview
4) Install
5) Configuration
6) Testing
7) Power consumption measurement
8] Conclusion
9) How to order
10) More information about the miner
11) Firmware upgrade instructions

Last updated in: February 17, 2018.

Steemit blogging website:
https://steemit.com/review/@hagssfin/review-guide-bw-com-bw-l21-550-mh-s-950w-litecoin-scrypt-asic-miner (https://steemit.com/review/@hagssfin/review-guide-bw-com-bw-l21-550-mh-s-950w-litecoin-scrypt-asic-miner)

Nicely formatted version (February 17, 2018) available for download here (Mega.nz cloud service):
https://mega.nz/#!0oVThaRD!UJT-TMD4w8p2m4CoZCwfdu-i50h3U8znLKD-sm8IKYE (https://mega.nz/#!0oVThaRD!UJT-TMD4w8p2m4CoZCwfdu-i50h3U8znLKD-sm8IKYE)

1) General information, other items needed
BW-L21 is a LTC (scrypt) ASIC miner using 28nm ASIC chip technology, manufactured by BW.com (headquarters in Shenzhen, China).

It is a standalone miner with a built-in controller and you don't need a separate Raspberry Pi for example to run it.

It weights 4.8 kg which is pretty usual and reasonable weight for a ASIC miner.
Outer dimensions are 329mm (L) x 127mm (W) x 159mm (H).

The nominal hashrate is 550 Mh/s(+/- 10%) with a nominal power consumption of 950 Watts (+/- 10%).
However, the miner that I got was hashing mostly around 580 Mh/s with frequency setting 684 MHz.
684 MHz was the default setting for the frequency when I started the miner.

BW.com: www.bw.com (http://www.bw.com)

Technical specifications:
https://i.imgur.com/kU90d2D.jpg (https://i.imgur.com/kU90d2D.jpg)
Technical specs. Click for a bigger version. Picture taken by HagssFIN.

Other items needed:
• A server grade power supply with at least 6x PCI-E 6-pin connectors, every one with own cable at least 18AWG wires.
(I used a 1300W (unknown brand) power supply provided by BW.com as a complimentary item in my miner order).
I'd recommend at least a 1200W power capacity rating for the power supply.
HP DPS-1200 FBA with a good breakout board and good cables is one good choice, for example.
BW.com also manufactures their own official custom power supply which is available for sale in their web shop. Note: the power supply shown in this review is different, it is not the official BW.com custom power supply.
• C13 power cord suitable to your country's electrical socket
• Ethernet cable to go to your router/switch
• Computer to set initial pool and configuration settings.


2) Unpacking
The delivery was pretty quick via DHL. It was sent in Tuesday from Hong Kong and in same week Friday it arrived here Finland.

Because of my trip in Germany I was able to pick it in the following week Tuesday from a DHL Packstation where it was delivered to in Friday at my request.

Packaging was pretty good with lots of foam to protect both the miner and the PSU shipped together in the same cardboard box.
Normally BW.com actually ships two miner units in this same type of cardboard box, but
in my case it was used to ship one miner and one PSU.

I would have hoped though some ESD plastic bag for both the miner and the power supply.
They came inside the box without any plastic bag.

But both hardware came successfully in a mint condition so this was not a serious downside.
https://i.imgur.com/zaZCg46.jpg (https://i.imgur.com/zaZCg46.jpg)
Packaging material. Click for a bigger version. Picture taken by HagssFIN.

3) Overview
Here are some pictures about the miner and the PSU that I got included with it.
The power cord and ethernet cable seen in the pictures were not included, I bought them separately.

Click the picture to show a bigger picture. Pictures taken by HagssFIN.
https://i.imgur.com/IXvdsl3.jpg (https://i.imgur.com/IXvdsl3.jpg) https://i.imgur.com/Vg1vvdC.jpg (https://i.imgur.com/Vg1vvdC.jpg) https://i.imgur.com/lrHJKPO.jpg (https://i.imgur.com/lrHJKPO.jpg)
https://i.imgur.com/figprRX.jpg (https://i.imgur.com/figprRX.jpg) https://i.imgur.com/hJGL5K2.jpg (https://i.imgur.com/hJGL5K2.jpg) https://i.imgur.com/5Tx7KK4.jpg (https://i.imgur.com/5Tx7KK4.jpg)
https://i.imgur.com/sMXsWFy.jpg (https://i.imgur.com/sMXsWFy.jpg) https://i.imgur.com/CVeDBuj.jpg (https://i.imgur.com/CVeDBuj.jpg) https://i.imgur.com/O3QDO7C.jpg (https://i.imgur.com/O3QDO7C.jpg) https://i.imgur.com/SXUt5Bb.jpg (https://i.imgur.com/SXUt5Bb.jpg)

February 17, 2018 update:
I added here all the images released by the official distributor HyperBit at their Facebook page.
These images  show some more details that are not clearly visible in the images I took with my camera.
In these images you can also see the official BW.com custom power supply unit.

Click the picture to show a bigger picture. Picture copyrights reserved to HyperBit and BW.com.
https://i.imgur.com/u19gd8h.jpg (https://i.imgur.com/u19gd8h.jpg) https://i.imgur.com/FGynYwe.jpg (https://i.imgur.com/FGynYwe.jpg) https://i.imgur.com/A8LaVV6.jpg (https://i.imgur.com/A8LaVV6.jpg)
https://i.imgur.com/nX1ybtP.jpg (https://i.imgur.com/nX1ybtP.jpg) https://i.imgur.com/BOTDKtN.jpg (https://i.imgur.com/BOTDKtN.jpg) https://i.imgur.com/MwQlIYy.jpg (https://i.imgur.com/MwQlIYy.jpg) https://i.imgur.com/tSzEhSL.jpg (https://i.imgur.com/tSzEhSL.jpg)
https://i.imgur.com/FPTG2V2.jpg (https://i.imgur.com/FPTG2V2.jpg) https://i.imgur.com/Dcq24P8.jpg (https://i.imgur.com/Dcq24P8.jpg) https://i.imgur.com/AKn2TKK.jpg (https://i.imgur.com/AKn2TKK.jpg)
https://i.imgur.com/x3ioQeB.jpg (https://i.imgur.com/x3ioQeB.jpg) https://i.imgur.com/sTxAwf5.jpg (https://i.imgur.com/sTxAwf5.jpg) https://i.imgur.com/LswPu0M.jpg (https://i.imgur.com/LswPu0M.jpg) https://i.imgur.com/lqj3sDg.jpg (https://i.imgur.com/lqj3sDg.jpg)

4) Install
The installation was pretty quick and easy as it usually is with ASIC mining hardware.

You need to connect the Ethernet cable to your miner and the other end to the router or switch device (step 1).

And you need a proper power supply and then you install the six PCI-E 6-pin cables to the connectors found at the top side of the miner (step 2).

The miner uses DHCP to acquire an IP address and you can find it easily from your router configuration page
IP address list or by using software tools found online.

Knowing the miner IP address makes the next miner configuration part possible.

https://i.imgur.com/J9S42gO.jpg (https://i.imgur.com/J9S42gO.jpg) https://i.imgur.com/M9z0rRp.jpg (https://i.imgur.com/M9z0rRp.jpg)
Step 1._______________________________________________Step 2. Click for a bigger version. Pictures taken by HagssFIN.


5) Configuration
First you need to go the miner IP address with your web browser.

Then you login to the configuration page.

Username is admin and the password is bw.com by default.

I tried changing the language to English, but I was unable.
Edit (February 17, 2018):
English GUI is available in the newest firmware version.

However, it has not too hard to go through the configuration pages when you have Google Translate as a helping hand.
The GUI is most likely the same as with the BW.com 14nm Bitcoin ASIC hardware, and there is a logo left saying that.

https://i.imgur.com/P1nm29i.png (https://i.imgur.com/P1nm29i.png)
Login screen view. Click for a bigger version.

Then you need to setup your network settings.
Network settings can be found by clicking this logo:
https://i.imgur.com/V3twlEW.png

My miner IP address is 192.168.1.138
My subnet mask is 255.255.255.0
My gateway IP address is 192.168.1.1 (my router).
My DNS address is 192.168.1.1 (my router).
https://i.imgur.com/EYcpAon.png (https://i.imgur.com/EYcpAon.png)
Network settings view. Click for a bigger version.

Now it is time to setup mining pool settings.
Pool settings can be found by clicking left one of this logo:
https://i.imgur.com/Khmy2uC.png
My pool settings were for Nicehash.
https://i.imgur.com/XRXnA8U.jpg (https://i.imgur.com/XRXnA8U.jpg)
Pool settings. Click for a bigger version. Picture taken by HagssFIN

You can put address and username for three pools in priority order from 1 to 3.
There was no possibility to input pool worker password for some reason.

It is sometimes an useful feature in more way than just a password, as few pools offer a possibility to input attributes in the password field.
Extranonce.subscription that I tried using (#xnsub after the pool address port number) used in Nicehash is not yet supported by the miner Cgminer software.
Edit (February 17, 2018):
This is fixed and now available in the newest firmware version.

The fourth and last field is for the miner frequency.
684 MHz was the default value when I received the miner.
It is possible to choose frequency between 384M to 1020M area, but I think I will keep it at the 684M.

6) Testing
After all the settings were made properly, it was time to test the miner.
The hash rate was around 580 Mh/s and it slowly but surely started to show the same at pool side.
https://i.imgur.com/5BKBz6K.png (https://i.imgur.com/5BKBz6K.png)
Stats page. Click for a bigger version.

Being able to see what happens in the Cgminer in real time was a nice bonus feature.
https://i.imgur.com/u7cpYim.png (https://i.imgur.com/u7cpYim.png)
Stats page. Click for a bigger version.

There was a small problem after logout and then logging in again.
The GUI showed hash rate as zero, but there was no actual problem with the hash rate when I checked pool stats page.
Stats just won't update for some reason in the GUI.
Edit (February 17, 2018):
This is fixed in the newest firmware version.

Also, it would be nice to be able to see miner hash board temperatures and to control fan speed manually.
These two things were unavailable.

7) Power consumption measurement
Both voltage and current measurements were done with HT-Italia HT7011 clamp multimeter.
Technical specs data sheet (.pdf document): https://mega.nz/#!5ssAiZQY!nuixMYOwoYImFX1zfzc9KibmhO2ig-Adav37rRt50AU (https://mega.nz/#!5ssAiZQY!nuixMYOwoYImFX1zfzc9KibmhO2ig-Adav37rRt50AU)
https://i.imgur.com/guzYZVL.jpg (https://i.imgur.com/guzYZVL.jpg)
HT-Italia HT7011. Click for a bigger version. Picture taken by HagssFIN.
https://i.imgur.com/GrkPoBw.jpg (https://i.imgur.com/GrkPoBw.jpg) https://i.imgur.com/9Wkw5xQ.jpg (https://i.imgur.com/9Wkw5xQ.jpg)
Voltage. _______________________________________________________________________________ _____Current.
Click for a bigger version. Pictures taken by HagssFIN.

Stable result for the voltage was 220 V_AC and 4.5 A for the current.
This means that the power consumption (at wall) equals about 990 W,
when the frequency setting is 684 MHz and the hash rate is 580 Mh/s.

8] Conclusion
BW-L21 is a great looking miner in my opinion and it is easy one to setup.
It performed as advertised and even a little better, without any need for me to do some tweaking.

Power consumption is reasonably in the 1kW area which I personally like and noise is not too bad when fans are rotating at 3000rpm speed.
Cooling design is done well and the miner didn't get too warm.

It is not as loud miner as Antminer S9 for example but it still produces quite a huge amount of noise, so you don't want it in the same bedroom with you.

I think that this makes a serious competitor in the Litecoin (scrypt algorithm) ASIC miner market for the Antminer L3+.

I would like to thank BW.com for a nice miner and for the chance to give a review for it here at the forum.
I've been interested in their products for a long time and now I finally had a chance to try one of their products.

Special thanks for Ronald from the BW.com team for the efforts to make this review possible,
and for the support via e-mail and Whatsapp.

If you got any questions, feel free to drop them here in this thread.

9) How to order

BW.com webshop:
In late 2017, BW.com released their new website and announced a webshop, in which you can make an order for the mining hardware.

BW.com official webshop (English): en.shop.bw.com (http://en.shop.bw.com)

BW.com official webshop (Chinese): shop.bw.com (http://shop.bw.com)

Official distributor HyperBit:
HyperBit is an official distributor for BW-L21 miners and miners are available when they have a open batch for sale.

HyperBit website: https://hyperbitshop.io/

Follow their website or their Facebook page to know when they have the next batch for sale.

10) More information about the miner
More information about the miner is available in following web addresses.

Introduction video at BW.com Facebook page: https://www.facebook.com/BWCOM1/videos/1207481296022406/ (https://www.facebook.com/BWCOM1/videos/1207481296022406/)

Twitter post by BW.com: https://twitter.com/www_bw_com/status/874514190337163265 (https://twitter.com/www_bw_com/status/874514190337163265)

Product page #1 at BW.com website:
https://www.bw.com/pool/miner (https://www.bw.com/pool/miner)

Product page #2 at BW.com website:
http://en.shop.bw.com/prod_view.aspx?TypeId=66&Id=168&FId=t3:66:3 (http://en.shop.bw.com/prod_view.aspx?TypeId=66&Id=168&FId=t3:66:3)

BW.com website: www.bw.com (http://www.bw.com)


11) Firmware upgrade instructions
Here are the firmware upgrade instructions, which I got from the official distributor Hyperbit back in November 2017.
Version date: November 17, 2017.

https://i.imgur.com/lVBbNCL.png
Link:https://i.imgur.com/lVBbNCL.png (https://i.imgur.com/lVBbNCL.png)

Thanks for the nice review.

Thanks.   :)

Not a chance in hell we will see these in the world by the time a group buy is made. Not at 100 units.

If they offered them direct as a min of say TWO units. I'd get 2 just to diversify from bitmain. (bitmain: evil its what we do!) tm bitmain

But I just got some Bitmain's yesterday. This at a $1,650 usd price paid in LTC. (thru mostly luck 2 hr notice at 2am for a 4am USA sale ..and according to the thread they moved 10,000 units in 40 min)

I really, really can't get my head around it. You have 10K of units available and you announce 2 hrs ahead of time ...and you sell out in 40 min....jeez..it like they

don't even have to TRY anymore! (Let them eat cake..you asleep in the USA tough luck..our web site Jam's up tough luck...we are only game in town..screw you) :(



So hell, I guess if bw does not have any interest in overseas sales to consumers, bitmain is still the only option (sucky though it may be)

Did you test any other pools than Nicehash?

You have to assume that big part of Bitmain orders where taken by resellers and scammers. Also BW is probably selling these so they can make more money and make more miners for themselves. I doubt they will really offer them is serious quantities to public. Most likley just big orders for farms.group buys and big resellers.

Yeah, I moved to Prohashing.com and it is working ok as well.

nice review, i hope they give it to you a bit more for some "in depth testing" ;)
Too bad they don't lower the minimum qty. Would be nice to see some competition for bitmain in the small ops segment.
Any word on warranty-handling from their side ?

Thanks.  :)
In the introduction video BW.com mentions that there is a six month warranty, in which you can send it back for them to do the needed repairs that are because of quality issues.

Is this machine worth the extra cost if you get an l3+ at retail price? I'm assuming no, it seems to fill a gap based on the aftermarket selling price of l3's.

Very nice review, seems to be a good competitor for the L3+

Wonder how did do 900W @28nm instead of Antminers 800W @16nm...

Really would like to get my hand on some of these ;)

Also send you a PM

PM replied.

I'm pretty sure that BM1485 chip in L3+ is 28nm node process  too.

Highly doubt that. Most likely all their lineup is L3+/S9/D3 is done on same process to cut costs. Most  likely they are also very similar, most differences coming into chip codebase.

Your argument is invalid, it is actually cheaper to make 28nm node process chips.

Bitmain is not mentioning the node process any where visible. If it was 16nm they would use it in advertising just like they use it a lot in the Antminer S9 advertising.

I tried a lot of Google searching but I was unable to find which process BM1485 is done.

Producing costs are actually lower. Wafer itself will cost more, but 16nm will have much more usable chips than 28nm waffer. Although developing costs for 16nm will also be higher. So might be 28nm.

Probably should just ask Bitmain about it, wonder if they will answer.

Sigh. Need about 10 of these. But no way to get any. Damn this
Review is like a ASIC centerfold. FML

Very nice review, good pictures.  Is there a way to change the language for the setup page at all? 

So the power consumption per MHS is roughly in line with the L3+.  Interesting.  Too bad the price is $2500 at a volume of 100 units. 

Did you get a chance to check the sounds levels?  How many DB are coming from these?  Thanks.

Bulletdodger wrote in this another thread https://bitcointalk.org/index.php?topic=1918895.60



You guys really should get together for a group buy and ask some other people too.
I'd bet that there are more people interested buying these.
You could even ask if philipma1957 would be interested in this,
I know that he's looking for more gear at the moment to his expanding solar farm with buysolar.

Just some of my thoughts.


No, I was unable to have it in English.

Yeah it is competitive in power efficiency with the L3+.

I don't unfortunately have a proper dB meter, but I would estimate about 60-65 dB.

thanks bro.

I'm gathering people for a group buy, I'm located in EU and would like to purchase at least 10-20 miners.
Anybody interested pls PM me.

Too late for me. I have a D3 coming sept 15th. If they shipped on an order now at
2.5k I'd do it. Not enough time, for the price

Yep grooup buy would be nice. But only if they can ship before Bitmain next batch. otherwise can just contact Bitmain with 100 unit group buy, might even get discount.

 14/16nm process costs a LOT more, as the equipment is much lower throughput compared to 28nm and soaks quite a bit more power/labor costs.
 The equipment ITSELF is also A LOT more expen$ive, so it's going to take longer to amortize that cost.

 Wafer cost is a MINOR part of the actual cost of a chip - I doubt it's even 10% of the total overall cost.

 Also, current yield on 14/16nm is still a fair bit lower as a % of the chip than 28nm, though it's high enough you probably DO get more usable chips per wafer.

 

Typically chip fabrication cost is the major part of the miner cost and it's cost is fairly standard in the industry for a specific process and as bitmain uses TSMC foundry chips from Taiwan their average cost per wafer is $ 7500 to $ 8000. From the information we get about L3+ specifications we can assume that around 24 to 28 miners can be build from 1 wafer so typically the miner chips cost around 270 $ to 300$. The cortex A8 microprocessor, heat sinks,controller,pcb, fans and casing price is fairly standard if you buy it in bulk it will cost around 150 to 200 $ and according to the batch release date analysis of bitmain it look like they manufacture around 60,000  miners of all types per month so it is assumed that around $ 100 per miner will be their production/Labour cost so if we add all that the total cost is around $600.
The major cost of any miner launch is the development cost of the wafer that is chip designing, tape out, testing etc which is near 10 MILLION US$ but assuming how many miners bitmain have sold it has been recovered in the initial batches. Now according to TSMC foundry website they have now dedicated segment for the development of chips specifically for high computing power.
So in my opinion bw can sell LW21 around $1500 in fact bitmain sold their L3+ for $1291 in June

Disclaimer: All this information is calculated by the data gathered from Google and from technical people and may be incorrect.

Who gives a f*** what process its made on.
We know how much power it consumes and its performance.
Biggest question is how do we make this possible for people to buy and promote healthy competition to Bitmain.

I wish this wasnt priced so high though (I think the MOQ is less of an issue).


BTW: I looked into this miner some more. The payment model is 50% pay now and 50% paid at time of shipment.
Shipment date is 3 months from date of order. MOQ as stated already is 100 units and $2500/unit.

So yeah this aint getting delivered anytime soon; earliest November. So yeah eff this.

how long have you bought it ?

Hello,

I am going to check them out, my friend is living in China and going to check them out in HK and their headquater also be in place for shipment. We are going to order at least 100pcs, so if you are interested to buy. You can buy with us also we will add a fee for this.

Will take photo and we can talk in skype also you can be in contact with my friend. Since we are afraid of the delay in production and receiving the item my friend will make his best to make sure everything goes well.

PM if you are interested and we can discuss more.

Cheers

 

L3+ is 28nm process. I've asked from Bitmain a couple of month ago.

Sooooo...........can you buy this unit with any cryptocurrency? Or is it just a blind USD send? Is there an English language site at all? ???

At BW.com web page you can change the language to English by pressing the logo with text "CN" in the up right corner and then selecting English by clicking the US flag.

I would be up to test the waters if there is a group buy. Granted if it can come by the end of Sept. I have a large order from bitman coming from the late sept batch and would like to  see if these can match their performance.

I would love to get in on a group buy for these, I'll get 5.

I need 2 pcs in Russia, if any.

I am in for 2 if the delivery date is before the end of Sept.

I am in for two if the delivery date is in September.

 That's VERY hard to picture given it's performance vs the Titan, A2, and Alcheminer (which were all 28nm as well).
 It's even HARDER to picture vs the A4 (which is specified as 14nm yet has LOWER performance and efficiency as used in the A4 miners).

 I'd bet a LOT that the L3+ is 14/16nm tech.


 The *D3* on the other hand I can believe being a 28nm design, especially with the size of that last batch Bitmain sold of those.

I'd be willing to organize that 100 unit minimum order if we can get a few buyers commited in advance

I'm in for 15 units
but I'm from EU
cheers

I am in for 10 units

Any update on groupbuy

$3500 is too much

I thought it was 3000? (did I miss the memo?)

They told me $2500

It was $2500 by 100 Units

I am in for 3 more if its at $2500 each. I am in USA

same here

$2500 min order 100 pcs wtf

I could probably get a group buy together ...but with no reply from emails from them ..my view is they don't give a F*ck and after that
price rise of LTC .they may have just decided to keep them in house or sell to data halls in China

always iffy when folk don't reply to common questions AT ALL

just saying they may be sold out or something..deafening silence

brad


edit: and before people ask me to join their group buy...unless they reply to me...I'm not really gonna trust a group buy from a newbie account
...not a slam...but silence on possible 100 unit order means to me..they may already be out...so I need a reply just to show they give a damn

(end of rant)

That is a really pessimistic thing to say.
As far as I'm aware of things, BW is receiving hundreds of e-mails after this review here at Bitcointalk was done
AND multiple news sources had news about it after the review.

Give them some slack.

You got to think yourself in their position.

been 3 weeks

been 2 weeks follow up email

been 1 week last attempt

edit: email sent to below on all

support@bw.com (http://support@bw.com)

i emailed them and tried call them with an chinese friend no any return to over 20 email and no answer any call like ghost company
creating an group is good idea but i m newbee to :(

yep couple of emails sent but no answer not sure how interested I am in dealing with a company that does not have the courtesy to email back.
Please call Bitmain back, but this is worse. I want to buy 80 Pcs, imagine how support and warranty will be if sales is this bad...

Wow they achived near to l3+  efficiency with 28 nm technolgy. Its very competetive against bitmain l3+ but i am sad to see that they only accept big orders :-[

I will be doing a group buy for people in Oceania, Please orders of only 5+ units as want this shipped ASAP, PM me or flick me an email

Sorry...newbie status...find someone on here for escrow who has done a group buy before.....not slamming you ..but you'd be foolish to
do a group buy with a newbie without legit escrow :(

Agree i will buy 10 if someone legit comes on this deal!

I would say support from these guys will be practically non-existent given how poorly they are communicating on pre-sales communication.  Business must be so good they don't have time to respond to inquiries.  Or they could care less if they sell any because they are happy mining them.

In either case it does not look good if you want any kind of support for this miner once you get it. 

this... i think i'll stick to Bitmain and Innosilicon for now.. one thing i can't take is when miner manufacturers turn snobbish.

Agreed mate there with you .
I mean I dont want to sound like an ass but dumped 50K so far in mining, happy to dump another 250K easy. We have a lot of industrial power and space.
What does it take to get attention, surprising. They lack basic communication etiquette.

is there any group buy for EU?

See the page 2, post 37. I know at least that mindtrip is planning a group buy.

I think you guys have a huge possibility to reach the minimum 100 units quantity.

I have some good news for you all wanting this machine. Our company Block Assets Limited is now the official international distributor for BW mining equipment including the L21 Litecoin machine. There is no longer a need to buy a minimum 100 units through us! If you would like to get your hands on any of our stock pre-launch then please get in touch with me at brett@balimited.io

Block Assests have been given the opportunity to bring this product to the retail market worldwide! Look forward to sharing the official site link with you all in coming weeks. In the meantime, get in touch if you want to reserve.

Thanks

and how exactly do we tell if you are legit with a newbie account?

my status here is legendary with a good trust rating...send me ONE and I'll review it and pay you for it after it arrives..thus establishing trust

if you don't prefer me others on here can be the same

philipma1957

longsnowsm

Maxumark

Searing (me)

others?

But right now with a newbie account with out someone on here with a decent trust rating and account standing...to act as a check on this being legit....with.too many scammers on bitointalk it is not gonna fly imho ..too damn risky

again ..not a slam..just the facts

brad

note: sent you a pm here and to your above email.

Thanks for your feedback, I appreciate your concerns. If you want to get some machines before we launch our site, I can offer a solution to verify. Contact BW directly (bw.com) and ask them for their distributors email, or whether they know who I am. Just offering the opportunity early as I am aware the interest there has been here from the members of this group.

Would be interested but I need someone Legendary+ to vouch.

I'm sure this is real but is BW really gonna sell to the public as far i know they never sold there BTC miners to the Public and told us they would ....

I know Innosilicon, bitmain, and Avalon kept/keep there word and do in fact sell to the public, be it in Groups buys or whatever . BW has yet to,an told us they would and never did .. .that I've seen ... if I'm wrong prove it, then ,I'll agree ...  an honestly i don't know how they can keep telling the same lie and live with it .....

I'm sure BW does have or will have the miners but selling them, I find hard to believe, till it happen .

so till then


SEEING IS BELIEVING >.......WITH  BW.

I'm interested in buying 100+ pieces of this. But email and facebook of the BW are not replying. Please someone PM me managers contacts for buying and shipping questions.

don't bother ...I tried ..they seem not to interested on any 100+ orders now...I suspect they are sold out

(no reply after 3 attempts the last month)

then again...at 3k I kinda wonder if that makes any sense by a Nov timeline anyway

the not giving a f*ck and not answering emails is also a concern

Hey guys as stated we are the official distributors for BW miners now. I apologise if you have not received a response from them on your enquiries, we are in the process of finalizing an official press release on the retail agreement which BW will announce through their website and network shortly; I suspect they are waiting for that to occur. In the meantime if you want to pre-order we have limited numbers left for shipping end of this month, the website will launch with larger batch shipping end of October.  Please contact me at brett@balimited.io, otherwise I will update you all when press release and retail site is live. Thanks to those members who have already ordered some of this months batch, appreciate your trust in our business, look forward to hearing your reviews when you receive. Updates as mentioned to come soon. Thanks

Received 5 more units today to send out for press reviews, thought I would share. Not long to wait now and site will be up!

https://ibb.co/kSJCMv
https://ibb.co/jQtJuF
https://ibb.co/nJoJuF
https://ibb.co/jHPDTa

hmmm.....well it is something....still dubious about this...but progress is progress.....

Great news.  :)

Hopefully BW.com soon puts your information at their website.

well got this email to day about the miner seems they are gonna sell to the public and taking group buys ...


http://1stminingrig.com/bw-l21-litecoin-scrypt-asic-miner-review/?utm_source=feedburner&utm_medium=feed&utm_campaign=Feed%3A+1stMiningRig+%281st+Mining+Rig%29

but why is it only using 28 nm chips if they can do that with a 28 nm chip why not with less chips and boards using 14 nm and use less power ...seems to me sense 28 nm is older now it should be less per miner in price .. the speed shouldn't matter .  i guess now we wait to see if it lives up to the power/hash they claim it does but using 28 nm chips ..that might become a problem later on ...



ASIC chip type: 28nm LTC ASIC chip by BW.com
ASIC chip quantity per unit (miner): 144 chips
Number of hash boards per unit: 4 hash boards

What did these guys smoke to predict a ROI of 3 months

28nm node process LTC ASIC chips are the best possible with the current R&D but I would not be surprised to see 16nm/14nm chips in about a year.
Could be sooner, could be later.

BW.com has now officially announced at their website that HyperBit (by BlockAssets) will be a worldwide retail distributor for the BW.com mining hardware.
https://www.bw.com/ (https://www.bw.com/)

HyperBit will launch their website and shop soon, stay tuned at their Facebook page.

I have updated the "How to order" section in the review with this information.

price per unit? (before I dine upon 'crow') :)

They said that the price will be set when the shop launches.

One month passed and BM increased price to $2280/  What a shame!  :-\

it has to be 'newbies' I hope enough to not just overbuy equipment but hold the coin to drive the price up

gonna take a lot of newbies to make crypto prices go up to what the miners expect for ROI

but hey ...seems there is adoption...maybe 'foolish' adoption by newbies on dubious equipment

but has to be more than a few folk...I can't see the old hands causing this sell-off of bitmain equip yesterday at $2,280.00

anyway, more confused than the previous post quoted now above

(tosses up hands....kicks can, wanders off down the street mumbling about greedy ASIC makers, insane prices, and clueless newbies.....argh)

later

useless, the price is expensive, and delivery is as fast as BITMAIN can do.

nothing to see here.. .time to move on.

Heh, no price yet on these? Thought it was supposed to be priced on Monday 9/25/17?

If you talk about the Hyperbit shop launch, that happened already and they sold out https://hyperbitshop.io/

Price for their first batch was 2690 USD per unit.

Delivery time is same as bitmain......I do not call this making a difference in the crypto world as first stated.  I thought finally a company showed up that could deliver in a reasonable time frame.

lol....well we all need to hope for a price pump on pow scrypt and/or LTC ..It is not like I'm immune to hope that the price
goes up I have 3 L3+'s at $1,650 arriving 15th of October....

but the price of pow scrypt has to go up or even that will not be enough with the amount of equip hitting the world

anyway I limit my optimism to THREE 2 months ago....I just can't justify the prices of equip from everyone now....at this point

in time imho ....if you are betting on the price of scrypt pow coins to pump in price......you can just as well hold coins...

Anyway, maybe LTC or whatever will pump to 150 usd or something, then any of these concerns of mine won't matter long term


edit: by the by what was hyperbit's batch size hitting the world our of curiosity ...anyone know?

Did anybody succeeded in purchasing L21 on last weeks sale?  Was it possible to pay in USD only, or BTC was also accepted?

I tried but out of stock before checkout
they should increase their stock numbers
managed to get l3+ during ico ban

Are all the items here for sale? How his process if you want to have the item.

sign for updates on thier web site and you will receive info about next sale

There being distributed by Hyperbit and also been posting updates on there Facebook page, https://www.facebook.com/hyperbitshop/ (https://www.facebook.com/hyperbitshop/), the first sale was USD bank transfer only I believe. I decided against it due to the price there selling at.

any feedback?  did some machines arrive yet???

Their delivery is somewhere in November........A bitmain clone, nothing more nothing less.

Not a clone, these L21 are well made and more reliable than Antminer L3+ miners.
I've already sent two hashboards from two different L3+ to the warranty repair.

Guess it depends, touching wood my L3's are running fine so far.........

According to there Facebook page they have moved shipping forward to October 30th for the first batch so good news for anyone who bought one, see there most recent post: https://www.facebook.com/hyperbitshop/ (https://www.facebook.com/hyperbitshop/)

They give any clue on the batch size..curious....from my guesses ..you can add this batch to the other 4 batches by bitmain in the wind (5 if they launch a batch this week)
at around 10k plus a batch..

my newbie dreams of mining in 2013 are repeating...betting on a price pump on scrypt pow to get me out this hole on scrypt pow miners (or at least keep it going)

I hate regressing to 2013 and newbie coin pump dreams to get me out of equipment jams....You'd think I'd moved past that..alas ...not so :(

Did HyperBit give this miner to you to review for FREE? Or did you actually buy it?

Not questioning your integrity, but as a reader of your review i'd like to know. Asking because I would personally be more inclined to give a better review to anything or anyone who gives me $2000+.

Please read the disclaimer in the very beginning of my review.
I bought the BW-L21 from BW.com.

Hyperbit was not involved at all in the time of this review.

Well, the power supply that was delivered with this miner and is included in this review, was a bad quality one.

Today I woke up and smelled some burned plastic in my apartment.
The worst wake up for a while.

I noticed that one of the 6-pin pci-e power cables had burned first, and then it had spread among them all.
The power supply goes straight to the recycling, I won't ever use it again.

I now bought a proper good psu this time, I should not have trusted anything less than a proper server grade psu to do the job.
I bought HP DPS-1200 FB A server power supply with breakout board and 16AWG 6-pin pci-e power cables.

I also needed to disassemble the miner, remove the motherboard that has the power connectors, and then send it for lightfoot for repair since he's got the skills and equipment needed for the replacement job.

Here are some pictures of the burnt components for those who are interested:
https://i.imgur.com/EPlLLfj.jpg (https://i.imgur.com/EPlLLfj.jpg)
https://i.imgur.com/1hPFpNs.jpg (https://i.imgur.com/1hPFpNs.jpg)
https://i.imgur.com/KFqlMG0.jpg (https://i.imgur.com/KFqlMG0.jpg)
https://i.imgur.com/o8R18L5.jpg (https://i.imgur.com/o8R18L5.jpg)

Are you still in communication with the owner? 

Do you have any proof anything was ever shipped to you?

I also had someone contact me but it was so long after I wrote that I did not take it serious.
                                                                                                regards

@notey
They have had few different batches with different shipping dates. Which batch did you guys buy?

eww that must smell ugly. I thought most PSUs have circuit-breakers that prevent such a literal meltdown.
How much will the whole repair-operation cost you ?

I'll report the cost when he has done his magic with it.

Notey,

We purchased quite a large quantity from them. I was given a couple of excuses on why they weren't sent out on October 31. I hounded them for tracking and finally received tracking on 11/07/2017. It says multiple packages and the weight its all correct. I am in the same boat as you. It just says "order processed: ready for UPS" Let me know if you get any updates on yours. We were hoping to buy on a monthly basis with Hyperbit since they promised 5-10 day deliveries every month. In their defense they have at least been responsive to my emails, but I gave them a lot of money and would like the products delivered on time!

I may be remembering this wrong. But thought these units, YOU had to do shipping? Why
I passed. I’m likely inncorrect, but it nags at me. Just in case FYI.

It included free shipping. I mean they have created the labels for all of our units, but haven't shipped them. It doesn't make sense, and they are blaming a 3rd party logistics company. I hope the tracking updates this week  :-\

Don't know about yours, but our Fed Ex shipment also originates from Chino, California.  The miners are actually shipped from Shenzhen, China - so, not sure about the hoops there.

Yes, ours says UPS Ground which I thought was a little odd, considering it's coming from China? I assumed it was being flown in through some cargo company and dispersed to UPS. I could be totally wrong.

I can't see where the label was originated. I mean BW.com had them listed as a reseller so I trusted them. My honest opinion is they are legit, but I think they are being used for a month and then shipped to us. I could be wrong, but that is my gut feeling. I'd like to think I am still going to receive our units.

Out of curiosity, what was the weight of your packages?

31.6 pounds for two miners and 2 PSUs (2 units per box).  It seems like they are sending the US miners to the west coast and then into delivery channels from there.  I think we will likely get them.  I just think it's going to be much longer than anticipated.  Please post with any additional details/questions.

Well, I just got off of the phone with UPS. Mine originated from Springfield Gardens, NY. My boxes are 26-27lbs a piece, so I'm assuming I'm receiving 2 miners per box. Are you on the east coast or west coast?

I was told that there were 2 miners per box.  Mine are listed as being a little heavier than yours for some reason.  We are on the east coast, mid-atlantic area.  Your labels originate from NY, no telling where they actually are right now.  I asked for a tracking number that showed the current location of miners, but was never directly answered.  The Hyperbit employee I've been communicating with has had IP addresses from Australia and Seattle Washington.  I've been ordering additional L3+ miners from Bitmain since there isn't  a lot of transparency in this process so far.  I hope it gets better soon.  Like you, I saw that BW was listing them as distributors and that's why we started buying.

Sounds a lot like as a distributor they got the miners early. Perhaps same time as the OP also
Got his say more or less on his evaluation unit and they have been mining the hell out of them as
The distributor.

I am very sorry to hear this

Yep...it takes time to take the miners down after using them for two months....air compress the dust-out.....pack them up with all the proper doc's so it looks unused (damn, where is

that original packing slip)....load them all up and drive them down to UPS and/or fed ex..and as was stated in a previous post... ship them to original customers from N.J. and was it Arizona?

I've no doubt..this is the bottleneck from China to you.....mining trickery.....

Hi everyone

On behalf of Hyperbit, the global distributor for the L21 Litecoin Miner, I would like to acknowledge that a number of USA based customers (7 in total) have been affected by a shipping delay to their recent orders. All other customers for the October 30th shipment have received their L21s.

We have been in regular direct contact with those customers affected to let them know about this and we sincerely apologise for this unfortunate and unforeseen delay. We are doing everything we can to expedite the delivery of the miners they have ordered and will continue to provide direct updates to the customers affected.

If anyone else, other than these 7 customers we have already been in contact with has any queries then please do not hesitate to email me at support@hyperbitshop.io and I will respond immediately.

Best regards
Josh
CEO, Block Assets - owner of Hyperbit

Thanks for the update.

Do you do cash sales in person in nyc?  can we pay in crypto?

Trickery, yes.  We ordered a number of the L21s based on the rapid PROMISED shipping time.  We paid right at $3000 USD each for the miners for batch one, once you figure PSU and shipping costs.  We have been running them for about ten days or so and I wish I had never seen one of these.

Since they were a month late, we had already been losing money on the miners depreciating against scrypt difficulty levels.  Hyperbit did not volunteer to refund shipping for batch one but during the time that our shipment was lost (yes, we could not find them) Hyperbit offered to "compensate" us for the lost mining time.  Ha! Just heard that this warm gesture of customer appreciation will only be extended as a credit against future orders!  The customer service is laughable to say the least.

Once the miners finally arrived, we put them on the rack next to our Bitmain products.  They are so loud that they drown out everything else.  88 decibels on the meter.  If you are putting these in an area where people work, you should provide them with hearing protection for sure. 

Now, we are having hashrate issues.  The other main draw for these miners was the hashrate, advertised as 600 MHs at frequency 684.  They get nowhere close to that.  When I opened the miner interfaces for the first time, it showed that the miners had been hashing for 180 days already.  The dashboard shows 585 MHs but most pools are clocking us below 500 MHs.  There are some hardware or firmware issues that are at play here.

I don't believe that Hyperbit is proactively attempting to address concerns.  Their leader attempts to argue with you instead of problem solve.

That's just my humble opinion after my small fry order of $40,000.

I just received my order today, thankfully it's on time shipment.
I tried to plug it in, only power supply power up (i use power supply that comes with miner), miner itself no light no fan. Am i missing something to power up the miner?
Anyone has this issues? Am i missing something?
Thanks

Can you doublecheck that the connections are ok and can you measure if there is a 12V output from the power supply? (you need a multimeter for this)

notey

     Tested for 180 days!!!!

     This seems like a new regular thing.  I can't help but feel that some of these companies treat individual customers (and small business customers) like dealers selling to drug addicts.  "you'll get it when I say you get it"  and yes, include the 'stomped down and cut' metaphors for lost time and profits. 

All connection are good. So, the power supply comes with 10 ports but the miner only have 6 ports, the question is does the port has to plug in in orders? ( i don't know which one to which).
I will get measure it tomorrow when i get one,  

https://www.dropbox.com/s/taj2k3le79a159r/File%20Dec%2010%2C%208%2008%2040%20PM.jpeg?dl=0
Also the PSU input is 180/260V AC, so i have to use 220v right?

As long as those six ports in the miner are powered, you are ok.
There is no specific connection order for the cables.
And you don't need to worry about spare pci-e power cables.

Yes.

More simply - make sure that you are using 220V or a voltage that matches the input requirement for the PSU. It sounds like you may be trying to power the PSU with 110V. Hyperbit support was supposed to ask you which voltage you preferred prior to shipping.

I tried 110v, i tried 220v, neither works :(
Would it be some losing cable inside of miner?
When you power up, the miner automatically turn on or you have to hit reset button?

ROFL the price of this asic is just stupid $2500 when bitmains l3+ is 1593 right now, not worth it to buy this bw-l21 asic

Damn, turn out my transformer was not working properly on 220v, i used multi reader to verify this, get new one at local shop and working great.
Another question is, since nicehash was hacked. What is best alternative one for ltc pool?
Thanks guys for the help.

I used to mine at Nicehash.

I'm now mining at Prohashing.com

to tell you the truth...I'm not sure if www.prohashing.com (http://www.prohashing.com) now is doing any better than www.litecoinpool.org (http://www.litecoinpool.org)

at 101% payout and no fees.

using this calc (which has 101% built-in) www.litecoinpool.org/calc (http://www.litecoinpool.org/calc)

With bitconnect no longer a POW coin and everyone piling into LTC...it may be a draw!

I used to make 15% to 20% more a day on prohashing..but them days seem to be gone ....

You have to wait a bit for Bitmain, but you're right, the L21s are WAY overpriced for what you get IMHO.  Hyperbit lost our shipment (along with others) and was a month late. So, ordering the high priced L21, really wasn't worth it compared to Bitmain.  At Bitmain recently, we've had orders verified in 15 minutes, shipped before schedule and next day customer service.  At Hyperbit, we were refused compensation (although promised) and/or shipping refund for the month late order unless we ordered again! Lol.

Consider BW for your L21s

I have had a recent order arrive 1 month earlier than expected from antminer!

Great, isn't it? Hyperbit's view that Bitmain's service is awful seems to be a difficult argument to support, especially when they cannot provide even location information for shipments.

I think eventually there will be some competition.. just not today..

The best thing about the L21s is that they run very cool.  There's no adjustment for the fans though.  One speed only and that's about 7,000 RPM.

Is the fan loud?  The l3+ fan is very quiet..

Yeah it is all changed now that LTC price went up big time.

I might look at my strategy again and go mining LTC.

again..the only way to really test this is take an L3+ on each and compare....but too lazy..... :)

may have to re-think this as well...still on PH

so if it is oranges and oranges between litecoinpool and prohashing I will likely stay with prohashing...my bet since sept 2017 was ALL

my miners x11 / scrypt-pow all paid out 100% in LTC....damn..I nailed that

what freaks me out about LTC proportionally and historically LTC price to BTC price it could go over 1,000 usd per LTC and still not

break that framework arrangement at 17k btc!

befuddled as usual on what the hell is going on (normal operating procedure last 4 years...you'd think I'd get used to this and adapt!.

I think you just admitted that you are human :) 

Not a terrible thing! 

I did have a very good experience with the support staff at Hyperbit.  Very helpful and responded via personal email in less than one day.  In running the Bitmain and Hyperbit products side by side, I personally like the L3+ better.  The IP report button, crypto payments and rapid order confirmations, miner interface and availability of online support materials are all big advantages to us.  L-21s are good miners, just somewhat overpriced, led by someone who doesn't understand customer service and lacking some of the comfortable features that Bitmain has.

Hi guys, I am joining the post a bit later than intended, but I was wondering if you had any view on the BW-L21 vs. the L3+?

Having read a lot of reviews from (individual) customers, it seems that Bitmain doesn't really spend time with orders for individuals, and only provides proper support for large orders. Is that conclusion correct?

I have come across largely positive reviews for the BW L21s though, so until I saw this thread, I was considering buying from them, because I can justify higher cost if their service and shipping is reliable. Any thoughts would be much appreciated! I am considering spending my savings on this (2k USD is not insignificant).

Thanks!

I had flawless transactions with bitmain but I did not require any customer service.  I just made my order then paid then waited and the stuff arrived 1 month earlier than stated without and communications needed.  I have not purchased any machines from the other company yet.

I ran the L21 for a week now, so far so good. Hash rate seems to be stable at 480-500 M/s (not 550 as advertised) i'm no sure if the pool affects the hash rate or not ( i'm using litecoin.org ).
It is running very loud which is not considering to let it sit in your house. The miner is running cool ( i guess the high speed fan make it running cool ).
Some people say it's way overpriced but L3+ is $2000 right now at bitmain.com, i'm not sure if this is still true  ;D . Shipment speed and customer service at Hyperbit are ways better than Bitmain too.

I'm trying to mine with other pools to see if the hash rate increase, if so may be i would get few more.

What is your hash board frequency setting?

At 684 Mhz it should have about 580 Mh/s hash rate.

It's set at 684 when i received it and i leave it as is, it weird. Is the pool affecting the hashrate or not?

My bad, i checked it from https://www.litecoinpool.org it says lower number than from bw , i'm getting 580 Mh/S on BW.

Ok, great!  :)

We ordered almost $40K in miners from Hyperbit.  They were a month late, promised free shipping (which they never did) and promised to compensate us for the lost time (they never did).  As a result, we ordered 20 L3+ units, paid with BCH, confirmed in a few minutes and shipped early.  Over the last few months, Bitmain has significantly improved their customer service.  I usually get responses to technical questions within 48 hours.  Not so w/Hyperbit (at least for us in general). We show 585 MHs on miner interfaces, but pool data shows low to mid 500s.  VERY loud.  If you have them at home, go with the L3+

 hello , this l21 miner only mining lite coin or ,  mining orther  scrypt  coin  mining,

you have try any coin  scrypt ?

BW-L21 is capable of mining any scrypt algorithm based cryptocurrency.

Litecoin is one of those.

I have tried this miner successfully ok in a multipool (Nicehash.com and Prohashing.com).

   you have minnig any coin tsesting ?

 i ask  bw.com ,    he say not mining orther coin , only lite ?

 

No offence, but did you actually read my answer?

I'm not going to be all like a parrot here.

 
   tnx .   ;D  im checking,  if only lite  bad !

May i ask what coins do you mine? I'm currently pull out only about $15/ day on BW.com pool :( too bad.

I have 91 such miners and im getting day by day more and more disappointed for weeks now.
Lot of details missing, miner freezes, no chance to know which one from looking at the lights, only one firmware update so far, expected for weeks another one but nothing yet.
Lot of restart needed and most of miners need a manual restart (power off / on) to get back. if you are lucky miner runs again for another few hours until it freezes again. In most cases another forced reboot is needed.
Hashrate acceptance is very bad on almost all pools. Even on BW it self.

I hope my post wakes up some of those from BW and HB representatives.

I have sent few times printscreens, videos etc but the reply is: BW team isnt getting the firmware out.

This brings lot of questions for hyperbit, but i will wait few more days, even it is causing is so much damages.

@floala
Here are latest instructions that I got a while ago from Hyperbit to upgrade the firmware to a new firmware including a English GUI.
PDF document at my Mega.nz cloud: https://mega.nz/#!VxVUGKgI!7NTQlT6FJuwoo3rkacMDM9ByyUh7mpkOfJq0Bw3OPLQ (https://mega.nz/#!VxVUGKgI!7NTQlT6FJuwoo3rkacMDM9ByyUh7mpkOfJq0Bw3OPLQ)

It is an easy process when you follow the instructions very carefully.

Would this provide any help to your issue?

Same thing here, after receiving December batch and run for 2 weeks. The unit starting to have problem, it's not hashing (4 led on the back  is off) , i have to turn off then turn on then hit reset button for it to hash again.
I contact hyper bit and they said that BW will release new firmware in 4-5 weeks. Hopefully, they will get rid of this problem soon.

I have 20 of them stuck in customs asking me for the European  Certificates of Conformity. "LVD 2014-35-UE" and "ROHS 2011-65-EC"

Does any one has that or how did you manage to go through customs?

Ask hyperbit, they provide it i guess.

Unfortunately, we all seem to be in the same situation.  I'm having lots of problems with my miners.  The L3+ is MUCH more stable and productive IMHO.  I might add that the BW.com website has now listed the L21s for sale.  I am not sure what the status is of the former distributor, but they are not answering our messages any longer.

When I unpacked my miners, I could see that they had been running for 187 days previous to arrival at my house.  See picture.
https://imgur.com/a/vre7B

wow thanks for posting that!  Sorry you had this happen to you!  How dishonorable

The first 2 L21 I bought  before hyperbit are running with no problems, but the pools never reach over 500MHS.

The last batch I got are always freezing and restarting. The dashboard should have a reboot button cause I'm always having to use ssh and
I dont trust that uptime value since it's. always jumping around

The dashboard does show 586mhs but mine can hardly stay above 500 for reported hashrate. I would say it runs between 430-500 , more on the lower end .

Does BW falsely adervtised 540 for their miner to justify the higher price vs bitmain or is it a software issue that they don't even seem to care enough to adress and fix .

I tried sending them an email but i always get a message saying the email could not be delivered

I'm also wondering the legitimacy of OP's review since all we see on his thread is people reporting lower reported hashrate than miner is "producing" .

Wow, what a nice way to ask help by throwing a accusation here.  :D

I think you are having a high rejected shares rate.

My reject rate is Always between 6-8% i'm on version 2.6, stale share around .15% and thats on all my L21's

As for ur comment about accusations . I searched the web , emailed bw , wen through their twitter , tried hyperbit , all gave that and no help was probided , also looked on this thread and realized i was not the only one . All i'm seeing is people with the same issue and no word from BW or hyperbit .

I basicaly spent money on 6 L21 , this other guy in the thread said to have 90 units but hey ur feelings are being hurt, very unreasonable of me to question the only person who says having no issue with this miner when everyone else seems to have the same problem .

Dam so insensitive of me

I'm not denying the possibility of a such problem.
I do have seen other reports saying the same too.

If you have the miner pointed to a low latency stratum server and you still get a high rejected rate, then there is something wrong.
In this case please contact BW.com and report this issue to them.

You win nothing by yelling at me, and you don't really encourage me to help you.
This will be my last reply to you.

You should point your criticism to BW.com, the manufacturer.

Obviously there's something wrong haven't you read the previous post where i clearly say that i have tried contacting BW and it did not work .

Great help reminding me to contact BW , amazing effort .

Again sorry for hurting ur feelings snowflake , now i know people wasting their hard earn money < ur over sensitive feeings .

PS:i never screamed at you , criticism does not equal screaming.

Easy now! He just reviewed the miner.  We operate the L21s as well.  Although we mostly run Bitmain products, we do have 12 of the L21s.  I can tell you that it's not a latency issue.  It doesn't matter which pool you point to, it's still a problem.  There is a high number of rejected shares on all of our L21s (10-40%) and the reported hashrate (as a result) mainly fall mid to upper 400 MHs. 

This is a real issue.  I am not sure if BW will fix it or not.  I know that Hyperbitshop's CEO just told a friend of mine that he would get to a firmware update in a few weeks.  But, seems as if Hyperbitshop isn't selling the miners any longer since they are listed on the BW.com site.

Could it be because of 2 much idling ? When i lookk at the miners log , see lots of "set work ttys 1 ttys 2 and 3 -4 "

Not lots of accepted work or new jobs . My reject rate never goes over 6-8% . Noticed even when i reboot the miner and my reject rate is below 3% , hashrate is still between 480-510

Maybe but I don't see much of any improvement until a firmware update that has been promised soon.  A couple of things I DO like about the L21:  They are very cool.  It's almost impossible to overheat them if they get fresh air.  The other thing I like about them is that they provide us with a lot of flexibility in our power circuit planning.  We can get three L21s and 2 L3+ miners on a 20 amp, 220V circuit with a full 80% utilization.  Makes planning flexible.  Hopefully, the firmware update will smooth out any performance issues.

Anyone found a solution for this issue ? Bw support rejects emails and hyperbit is not answering support emails

Checked latency and its below 30ms , played around with frequency's and 672 seems to be the least worst . I'm out of idea's .

I sent them e-mail too, I would like to help you guys but I don't know the answer for this.  :-\

I've usually had good response when messaging with Ronald from Bitbank Group, so let's hope we can get some help to this issue soon.

I've been in touch with hyperbit guys and for those who bought from December batch there's an actual hardware problem.

They found a defect with MOSFET in power distribution board and are trying to get new boards to ship to buyers.

Also, the new firmware should improve the global hashrate by having fewer rejected shares and better memory management blablabla.
The new firmware should also bring fan control so it's no longer running full speed.

Please keep us updated periodically and thank you!

@apax
Thanks for sharing this info.
Good to know that they are working on a solution to fix the issue.

Would like to note here that over the last week our L21s have been hashing well at prohashing.  The accepted rate is almost at dashboard level for about 1/3 of them and is in the mid-500 MHs for most.

It is a software issue...I work pretty closely with them since my miners use their chips. Been trying to get a L21 unit from them to help them fix the software but so far they have been out of stock and cant send me one.

What do you mean by "my miners"?

What's the pay system you chose ? I been meaning to try prohashing .

Jstefanop is the entrepreneur and main developer for the FutureBit miniminers.

His latest product is FutureBit Moonlander 2, which is a USB stick miner.
It uses the same 28nm ASIC chip as the BW-L21 miner uses.

Varies - right now I'm getting paid in LTC and BCH, but there are dozens of approved coins to be paid from.

using pro hashing and choose LTC is more profitable than actually mine LTC?

I have updated this review slightly and there is now also a nicely formatted version available (.pdf document).  



EDIT:
I wanted to try out this new platform and the review is now also available in the Steemit blogging website.
Link: https://steemit.com/review/@hagssfin/review-guide-bw-com-bw-l21-550-mh-s-950w-litecoin-scrypt-asic-miner (https://steemit.com/review/@hagssfin/review-guide-bw-com-bw-l21-550-mh-s-950w-litecoin-scrypt-asic-miner)

I'm still going to continue as before. Posting here at the Bitcointalk.org forum is my priority number 1.

Seems like hyperbit stopped all comunications . Use to have some kind of dialogue with them but nothing for weeks now.

Anyone had success with fixing this issue ?

Yeah I have not heard about Hyperbit for a long time.

Their last activity in social media was in January 2018.

I guess it could be that Hyperbit is not an operational company anymore.  :-\

Brett was really pleased with my review/guide documentation, I let them use that as material for an official document
and he promised that I could get a free BW-L21 unit as return.
This was back in October 2017. I have not received that unit.
Oh well, I guess it is time to move on.

BW.com has opened their own webshop and will most likely start selling their hardware directly to customers.

Hello,
Be sure to update the password while in the CLI. Also, update the passwd in conf.default file.

Running four of them I picked up. Updated to 2.60 without an issue. Even noticed the rejected rate moves around as well. My A4+ pop up with rejected packets from time to time.

Regards,

I cant get a reply from the company CEO in weeks, but I still talk with Brett and some of the staff several times a week.

Today I got the new firmware.
It doesn't solve the issue with the December batch, and I don't have the changelog so I can't really tell what's new about it. It did solve a issue with one of my miners that was "half-bricked".

Has far as I know, BW already has a fix for the issue with the December batch but hyperbit themselves are still waiting for BW to fix their own miners.
They don't know when that's going to happen... but at least the reply from Brett has changed from "no idea" to "soon"

They stoped advertising and selling because all miners BW built since December had the same unknown issue so they couldn't put them on the market.
I believe they're so full with emails that decided to go radio silent till they have the answer everyone wants to hear. But this is just my opinion (very positive)

I decided to try the BW shop you mentioned before and they don't sell the L21, just a PSU, an ethereum rig and case. No mention to L21 in terms of price or availability

You actually want to buy another L21 ? With the issues it gives and difficulty being what it is now i don't see how mining ltc is profitable , better off buying the coins directly specially since its so low these days .

At this rate we'll be making .5 ltc a month per miner very soon .

BITMAIN killed this little company ..  ;D

What is so funny about BITMAIN killing other companies that  makes you grin?
It would be bad if they had a total monopoly instead of the big market share that they have now.

BW.com is still a operational company, so your claim is false.

I don't want to buy, I have to many already  :P
I was just checking that information.

They have released a new firmware btw. It solves nothing... ::)

How would i go about updating ? Any new features on that update ?

Please see my guide (chapter 11), I have posted how to do the firmware upgrade process.

[/quote]

Please see my guide (chapter 11), I have posted how to do the firmware upgrade process.


[/quote]

I did look at it but it says version 1.8 . I'm on 2.6 already so i'm assuming pasting what u wrote would not be an update ? am i wrong ?

thats why i asked him how he did it .

Yeah in that case it would actually be an older firmware version.

The same upgrade instructions apply, but you would need to ask if Hyperbit or BW.com has a newer firmware version available than the version 1.8.
EDIT:

Every upgrade they have comes with different instructions. This last one requires to download the firmware file to my computer, have sshpass and gnu parallel installed on my computer and run a script that will copy the files to the asic...

I'm still waiting on the official release with the changeling, but so far I cant notice anything.

Okay, thanks for the information.
I stand corrected.

I wonder why they are changing the process with different firmware upgrade versions.

Hassfin I know you got a miner from them for free and in exchange you did a review.
When a company comes out with a miner and asks more than $3000 / miner and later on is not adjusting their price the result is to shut down.

Don't forget that they got preorders they build miners and then they put them to mine for them. Nice !! mining with the clients' money !
At the end when they got many many complains they started to ship.

Today they are out of the game!

Even if they come out with something new no one will trust them again ! They can get a loan if they want not to mine with preorder money.
Don't forget how bitmain started ! They had everything in stock ready to go ! Good old times  :-* :-* :-*

Definitely not dead, I’ll have something quite interesting in a few weeks :D

This is not true,
I paid for the BW-L21 miner plus psu,
and only after that Ronald sent me the gear.


That is exciting news! Thanks for sharing.
Loving the one Moonlander2 stick that I bought. :)

There's still no official release of the new firmware so I'll try to share it with you.
It's not as easy has the previous updates, but I've managed to do it with no problem having only a very basic knowledge of unix terminal.

These are the instructions I received via email from hyperbit:
 
Install sshpass: https://gist.github.com/arunoda/7790979
Install gnu parallel: https://www.google.com/search?q=install+gnu+parallel
If you're using Mac as me you'll need to install brew

firmware files: https://www.dropbox.com/s/indgp8nlnk3372s/2.9.0.tar.gz?dl=0
*please note it's my dropbox link, they sent it to me via email.

Guys how do you calculate the proper difficulty with these miners ? Say i was connected to a pool that does not auto set the difficulty for you , how would i go about knowing what difficulty to set my miner

I looked on the web and can't find a guide .

Any idea ?

It is highly recommend to use an automatic difficulty setting,
but if you feel you must use a static difficulty then you can try using d=131072 or d=262144 .

For mining ltc i don't need to set difficulty but for other scrypt crypto i sometime need to thats why i was wondering how do people calculate what difficulty they should set given its not auto set by the pool

I always leave it on vardiff cause I don't know how to answer that.

but I have made the test on a pool that required me to choose from 2 different ports, leading to a below XXX and over XXX diff value, and the end result was the same amount of coins produced on each, so...

Was trying to mine some xvg on mining pool hub and the logs kept showing diffculty too low and i was getting lots of rejected shares thats why i was wondering how to calculate dfficulty

You're gonna have a lot of bad shares with this miner anyway, one of the issues with them is that...

Does anyone has any news regarding this?

Am I the only one who bought a ton of these miners and now have them laying around switched off cause they dont work and BW/hyperbit doesn't do anything?

Apax my miner stopped mining today , the miner still runs but its not mining , kinda lile cgminer is not running .

When you say ur miners aren’t working , what u mean exactly ? Not turning on at all or same issue as me ?

ouch

Anyone happened to have the firmware 2.9 that appax linked ?

By not working I mean constant reboots, hashboards never going online and very low hashrate.


There's also a new firmware. These are the instructions:

and the file
https://cl.ly/e051621137ff

Also, it happened to me that they were only making noise. Just press the reset button X times till it boots up

I can’t even get to the Hashboard , can’t access the reset button

I think you mean dashboard. He was not talking about the reset button in the software.

He was talking about this reset button:
http://i65.tinypic.com/2pqjct4.jpg

I never noticed that little guy , i did the hard reset and it works now .. yaayyy

Thank apax and hagss

@ apax does the 2.10 update add or changes anytning regarding the high rejections rates ?

Any changes in the interface ? Did they add anything ?

^{@Seph213, I'm going to reply to your DM here so anyone with same questions can get an answer.}

---

This new update is some how more difficult to the average Joe.
I struggled a bit myself since my linux skills are not that much of a deal.

You need to use these 2 extra tools on your system in order to run the update. After getting them it's pretty strait forward.

• Install sshpass: https://gist.github.com/arunoda/7790979
  
• Install gnu parallel: https://www.google.com/search?q=install+gnu+parallel

And they only run on UNIX, so Linux and MacOS.
I dont know if there are any equivalents (probably they are, but I dont know).
So you need to get your hands on a Mac just for this task, or install linux on a machine.

The update did increase the overall stability of my machines, leading to slightly better hashrate, less rejections, and the dashboard has a new font and temperature is working.

However, if you struggle with the instructions and only have one or two miners then I say to let it go, or wait for that cousin everyone has that knows is way around to visit you and do it for you cause it's not that much of improvement.

I was able to get in touch with bw support . They send me the latest firmware update they have , so now bwminer is at version 2.8 and cgminer is 2.9.1 .

Now my rejection rate is Between .30% and 1 , huge improvement from 6 to 8% . Hash rate seem to vary between 520  and 570 , rately goes down below 500 like it used to.

They sent me a way to do it with windows using winscp ... took me 60 sec to get it done ..

Cool.
Can you post it here?

What's the firmware revision?

Did you get in touch with Hyperbit or BW themselves?

Not sure what’s the firmware revision but i’m assuming it’s 2.8 since my UI says bw version 2.8 . CGminer is at version 2.9.1

I got this from directly from BW , hyperbit support never answered their emails since i got this miner .

I’ll upload the files , am i able to simply post the file like an attachement ?

You need to use a file sharing website, like Mega.nz for that purpose.

that's weird... hyperbit told me they were the ones developing the firmware now, but also stopped replying about 2 weeks now.

the UI version on the dashboard is only regarding the UI itself, not the machines firmware.

Hi, please post a working link to the file with the firmware. Old link not working

Can anyone help? I even have the old firmware version 2.6 stopped installing. Who had it?
https://yadi.sk/i/GssZJFZ_sXtr2A

@prokola

I have sent a PM to Seph213,
maybe he could help you out with the firmware.

Thank you very much

People, be careful.

The file that username Seph213 sent me,
gave a bad result in the virus scan.

I used the VirusTotal service (www.virustotal.com).

See the test result for the archive file here (click for a high resolution image):
https://i.imgur.com/8P6EnvJ.png (https://i.imgur.com/8P6EnvJ.png)

Is this the official BW release?

Yes thats the one they sent me . If you not sure about my file due to the virus results which btw i didnt bother to check when bw sent it to me , you can can always email bw support and aks them to send it to you .

Please send a link to this file, try to deal with the virus
Thank you in advance!

I contacted a BW engineer, he gave me a new link to upgrade to version 2.8.0
Now all my miners work in unison)

curl -OL https://www.dropbox.com/s/6nwwdgadbxxjxrw/update_script_2018.10.tar.gz
tar -xf update_script_2018.10.tar.gz
cd update_script_2018.10
./update.sh


You're welcome)

In the version you have is there an admin password to access the webui ? Or is it like the other versions ?

In this version there is no interface for entering with a password, I did not immediately notice it ...
although this section was on version 2.5.0, it still did not work

is there no cgminer or bfgminer support for this device?

https://hyperbitshop.io/ does not load correctly for me...seems to be defunct

2.8?

I already had 2.10.3 from hyperbit since July.

Here's another link https://cl.ly/887f4105a0d9

I tried this 2.10.3 and i saw no difference in the WebUi at all .. what’s the advantage of that version ? Cgminer 2.9 that bw sent me fixed the high reject rate problems .

UI is the same from many versions ago.

I never had issues with rejections.

What happened for bitmain to sell their L3++ for 65$ ?

LTC fell from 400€ to 20€ maybe?

Anyone has any news from this guys?

I have an issue with one of their PSU.
The ASICs work when I change the PSU, but they dont work with bitmain psu. Any guess? I cant have all L21 running cause they dont work with different PSUs  ???

Hyperbit is back and selling new asics

Anyone knows about this?

no didnt hear anything about that. do you have a link to their site?

Their website is www.hyperbitshop.io

nice website, they currently have X1, X6 and X7+ algorithm asic miners but no scrypt  :'(

Err.. I think you have read it wrong.

Fusion Silicon X6 is a scrypt miner.

It is kind of a successor for the BW-L21.

Great topic.

If anyone is interested, im selling a couple of these here:
https://bitcointalk.org/index.php?topic=5118332.msg50224090#msg50224090

Hi guys,

So now ltc has come to shit profit wise (that's not news) I'm trying to get into downclocking this miner for the best effisciency.

Do you have any experience doing that ? has anyone found a sweetspot ?

Cheers,
Q.

I only ran it with the same settings and performance as seen in this thread opening post. Unfortunately I have no tweaking experience.

i didnt touch the unit for a long time but as far as i remember no overclock possible, you can change the frequency stuff but nothing will change

Lowering the frequency is exactly down clocking and the only thing to do.

Try different frequencies and check the power consumption on each.

We lowered the frequency to 460 and we found it was the sweet spot.
Nicehash has a nice interface to do this...

I would also recommend mining Verge as it is more profitable.

Also, if you will lower the frequency, i would suggest detaching the external fan. If you lower the frequency, the power usage also lowers and the boards radiate less heat. This is however something i would recommend doing during lower temperatures and not in the middle of the summer... although the miners we are not selling are doing just fine with this "hack".

You turned off the intake or outtake fan?

the intake.

I have a problem, if someone has any ideas of how to fix this.
when updating firmware from 2.2 to 2.8 a few miners crashed. I cannot reach the miners through their IP (i cannot see their IPs anymore).,
When I watch the power consumption I can see that the power usage does not rise above 170W, so the system does not boot.

Is there a program to fix this through the cable as I cannot see the IPs anymore?


So my conclusion is that the flash on several miners has crashed and i cannot update the firmware. Is there a manual way to get into the miners with a cable (there is a port on the miner) and instal new firmware?

There is the usb port, who knows maybe that could be used

I have not figured out the file system in the L21
or how to fix the file system.

I had similar issue with a miner but never managed to use that port.

The USB port is not USB, its TTL and requires a USB to TTL serial transcoder but they were never able to provide me the correct pinout and specifications. If you go by trial and error you can burn the board.

Eventually I managed to get the miner running after series of reboots using the reset button and a lot of swearing and infamous treats  :D

Thank you both. I also tried to get in touch with hyperbit, but they told me to take a hike

Hi,

His someone have acheved an update with firmware 2.10.3 ?

I buy two pieces , with firmware 2.8.0 , the interface dont show the temp.

I try to update with putty, and the firmware 2.10.3 dont work.

thanks

I'm interssting with this, Whats is the  lower frequency you run.

Thanks

Hi - Can you repost a link to the 2.9 firmware please. I'm having some problems with some LW-B21
[


quote author=apax link=topic=2118409.msg35356314#msg35356314 date=1524445717]
There's still no official release of the new firmware so I'll try to share it with you.
It's not as easy has the previous updates, but I've managed to do it with no problem having only a very basic knowledge of unix terminal.

These are the instructions I received via email from hyperbit:
 
Install sshpass: https://gist.github.com/arunoda/7790979
Install gnu parallel: https://www.google.com/search?q=install+gnu+parallel
If you're using Mac as me you'll need to install brew

firmware files: https://www.dropbox.com/s/indgp8nlnk3372s/2.9.0.tar.gz?dl=0
*please note it's my dropbox link, they sent it to me via email.
[/quote]

Guys, how the BW-L21 compares to the Bitmain L3 in terms of reliability / stability?

As you can see everyone complains about L21. They just suck  :-\ don't know about L3, never had one.

link for 2.10.3
  https://www.dropbox.com/s/xh41gw6p0o8ky9i/2.10.3.tar.gz?dl=0

Apax do you still have any L21's?  I'm curious if anyone has any of the firmware versions prior to the 2.10 disucssed here. 

If you mean L3 from Bitmain, then they are relatively good. Much better than D3 on stability. Although i got one L3 which got power connectors on controler board soldered other way around. Replacement also didn't work correctly, in end i think i wrote it off.

I still have, why?

So forgive me as i am not great in linux

I have installed on my linux laptop:
sshpass:
gnu parallel:
then downloaded 2.10.3
then tar -xzf 2.10.3.tar.gz
then cd 2.10.3
then Edited the ip.txt and specified the IP address of the test machine to update
then sudo ./run.sh

It does some stuff and i do see the BW-L21 reboot but then it comes up at bottom BwVersion2.8.0.  I assume it did not take update right?


ALSO has anyone made a mod firmware for this like Bliss etc.  I'd pay a few bucks for it.  Id like to mod freq and voltage etc like you can on the antminers

The version you see is the UI version, not the firmware that UI is the same.

there is a file inside the miner that has the firmware version but I can't remember the path to it, however if now you have the temperature showing up you've updated it.

Hi guys, I need little help. I have few dozen BWL21 that are not working and they are unable to show on network so my guess is that firmware is somehow broken. So I need source firmware file for flashing directly on chip using eeprom. I already wrote to BW and Hyperbitshop but no answer. If someone can help I would appreciate that.

Cheers!

Are you able to detect them in your network? How do you want to use eeprom?

One of mine recently died. It makes noise but the ethernet lights dont blink. I've replaced a small controller chip that burned but still dead.

Here's the latest firmware I have:

https://www.dropbox.com/s/ujvyjyznhob0nly/2.10.3.tar.gz?dl=0

Hello and thanks for the reply :)

Well situation is kinda messy, I have devices that are viewable on the network and some that are not. Issue is there are units with 2.0 firmware and when I updated them to 2.8 they stoped showing on the network. I got chips and adapter for eeprom for control board so I need to try and flash new chips with file that is for that use and not these updates that are for devices that are working. Probably your control board died... or some part of it...

That's over my experience and knowledge to help you further.

I know the issue is on the controller board, but besides a physical examination I can't do much. I found a controller that looked burned and replaced it but still dead. When I change the board with other one it works so I know the hashboards are fine but I don't have any spare controller to use...

I see, I also have similar problem with non working control boards and good hash boards. I hope I will find solution for those devices, thing is those files exist but I do not know where...

I have three of these miners - my only issue is that on the gui they all read at running between 550 mh/s to 600 mh/s but no matter what pool I try the pool only shows 375 mh/s to 425 mh/s

I am not sure what version fw I have as it is mostly in Chinese which I cannot read but I would love to have the newest official fw, if anyone knows of an official source - not to keen on just downloading random fw though.

***edit***

I found that the fw I have says "BwVersion2.8.0"  -- maybe this is the latest fw?

That's the problem with them. Never reaching 550 on pool

very rarely and I mean very rarely do they on the pool reflect the combined hash rate of 1.65 gh/s and if they do it is not for long - so yes, I do agree that is an issue.

other than that the only issue I have is the power usage - the seller stated they ran at 850 watts and not at the advertised 950 watts - mine run at 925 to 950 so the seller was wrong.


that aside, the units otherwise perform issue free. I dont have to restart them continuously, they are not overheating etc

those the ones I escrow with main account. Came from europe. Lite in packing.  Correct? Did they roi by now?

yes - those are the ones - and I would say I am close to if not made roi by now - depends on when/if I cash out the LTC - nearly 4 LTC since then.

yeah price was good on them.

can annybody help me, he is not updating:

https://imgshare.io/image/ubuntu.YgQDQ


[/quote]

@jordytje77

This might be a dumb question, but is your PC set in the same network subnet as the miner ? (192.168.178.x)

How's your ip.txt file?

For the interested miners who use the BW-L21, here's some info i found when playing around with this miner.

add /debug.html to your miner address, for example: 192.168.178.45/debug.html. This will show a page with some chinese info with some settings, try it, it won't change anything :)

Log in with winscp into your miner with user: root and pass: bwcon, then go to usr/app/ and you find yourself in the dir of the mining software.

Check version.txt what kind of version you have. Check conf.default for the config of the miner.

When browsing in some dirs, you will see it runs on a linux dist. specially made for the am335x-evm chip on the board.

That's it.

Hi.

Unfortunately i have a lot of this BW-L21 miners. Has anyone had a problem when reset button does nothing. I have at least 50 of them that wont reset and you cant do anything because it wont even show on LAN.

hmm. would you be willing to send me to tinker with? I had many of these and had zero issues. but I do not have anymore at the present. If I had one to play with, I might be able to solve your problem.

I have the exact same problem right now!
I only have one at the moment, but had to disconnect for a few months and now it doesn't do anything. The reset button doesn't respond, the lights are fixed blue all the time, ethernet lights blink but nothing on the router side and it's consuming around 300W.

. help the same problem are lit blue and the network is not visible.  Reset button not responsive

Does the firmware upgrade give any help?

(chapter 11 in my guide)

mine behaved like this when I first got them but I do no remember what I did to get them working but I did get them working and they worked flawlessly after that.

I remember I had to play with them and the network quite a bit.

So it could be some kind of a bug.
Maybe miners have reset their own ip address ?

Maybe Wireshark software can be tried to see if there is any traffic in the local area network, that looks like the miner.

Anyone have a good link for the latest firmware?

All the links are dead now.

Thanks