(Review/Guide) BW.com BW-L21, 550 Mh/s, 950W Litecoin (scrypt) ASIC miner

[Philipma1957cellphone]

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.

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[jordytje77]

can annybody help me, he is not updating:

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

Hi guys, how can i install this firmware? im using ubuntu

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

Code:

1. You'll need sshpass and parallel installed on whatever machine (UNIX) the script is run on. Links below.
2. tar -xzf 2.9.0.tar.gz
3. cd 2.9.0
4. Edit ip.txt and specify the IP address of the machines you want to update (one per line).
5. ./run.sh

Note, there will be lots of output as each machine is updated. 
Some of it may look like failures, this is ok and can safely be ignored. 
The updater is built to work across many potential versions and tries to fix various things on the system. 
Some of which may already be fixed, so the output reflects that.

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.

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[HagssFIN]

@jordytje77

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

[apax]

can annybody help me, he is not updating:

How's your ip.txt file?

[randes]

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.

[Tadejm]

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.

[MoparMiningLLC]

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.

[apax]

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.

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.

[ARMAT07]

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.

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

[HagssFIN]

Does the firmware upgrade give any help?

(chapter 11 in my guide)

[MoparMiningLLC]

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.

[HagssFIN]

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.

[kclements]

Anyone have a good link for the latest firmware?

All the links are dead now.

Thanks