Would you please elaborate more? How were you able to get rid of the latest stock firmware? as far as I know, even with the Sdcard it's not possible anymore unless the latest firmware they recently uploaded has some different signatures.

العفو اخي, الشكر لله. فقط لكي لا انسى اعتقد انني قمت بالتحويل للجميع باستتناء icy3 ان كنت قد نسيت احد او ارسلت مقدار خاطيء الرجاء اخباري.

Khalid = 7
icy3 =  2
yhiaali= 2
ulven = 8

اتمنى من الاخ icy3 مراسلتي او وضع عنوانه هنى, ايضا سوف ابقي هدا الموضوع مفتوح بالرغم من انتهاء المسابقة ليكون مكان لطرح الاسئلة حول موضوع block hashing نظرا لان الموضوع كان تعليمي اكثر من مسابقة فأعتقد ان ابقائه مفتوح افضل, الا ان كان المشرف يرا غير ذلك فيمكنه اغلاقه.

شكرا لكم جميعا مجددا. نراكم في المسابقة القادمة.

A great analysis but I have reasons to believe that it's a bit far from accurate, the 1 in 13m chance you have with the lotto is once every week, while the odds for hitting a block which you mentioned is based on a shot every day, so for this to be a bit more accurate you need to multiply the lotto ticket cost by 7, and then if we were to assume that the average lifespan for the miner is 2 years, then you will need to multiply that by 730, so if the ticket price is 2$, you will pay $1,460 to match the number of trials that a miner can have.

I am aware that there are other prize catogires of 3,4,5 matches but I think the prize is too small ot be considered, you also need to keep in mind that when you hit a bitcoin block you keep all the rewards and nobody can share them with you, where in the lotto, you are subject to share the prize with x amunt of people, on the othre hand, playing the lotto means you won't have to pay the power bill, no matiance, no cleaning no dead PSUs or a firmware glitch.

There are many more factors invovled to determine which would be econcmically better, I don't have the time, skills nor the desire to do that in-depth analysis (pehabs someone who does play the lotto and solo mine at the same time can do it) but I do tend to agree that perbaps and most likely playing the lotto is cheaper than solo mining.

With that being said, Solo mining is way more fun!!

Let's hope you did not brick the control board, where did you download files which you used on the SDcard to perform the flash? did the 2 LEDs flash a couple of times when you did the flash? also do remember to change the jumpers to their original location or else the miner won't work unless you have a Bootable firmware on the SDcard which I doubt.

I'd say "there's more to this than meets the eye" when it comes to trading, this is how bull/bear traps are generally created, the market gives you an illusion of some levels where you start to think they can't be broken and the moment you make your entry, kaboom.

As it stands bitcoin has been making lower highs and lower lows since the 8th of this month, in the A,B,C of chart analysis this suggests more movement to the downside and at least one lower leg below the 28k is more likely, I do believe that this correcting is nothing but markets paving their way for more upside movement, which I believe to happen in a few months, new highs, new glory for a couple of months and then we enter another bear market for a year or two, the bear market is the time when people should be buying mining gears not the top of a bull cycle.

As a result of this price "prediction", I expect gears prices to surge even higher in the next few months, S19 would probably be going for 13-15k, the difficulty will sure rise almost every epoch from now until the end of the year, around July the difficulty spikes will be larger due to the monsoons in China, people will be spending their student loans on mining gears, just a few months before the big crash.

---

Looks like we are looking at a small increase in difficulty, despite the fact that RIOT alone received 2500* S19 pro, it's funny that even 5000 S19s pros don't scare the difficulty anymore if we were to assume that Bitmain delivered 10 batches of the 2.5k S19 pros, that's only 2.75EH which is not even 3% of the total hashrate we have at the moment, this is why I wrote in the other post earlier this year, that the spikes will be small and steady, of course, I didn't see that 10.79% of the 9th Jan adjustment coming, but let's just hope that was a single event that isn't going to repeat itself.

This usually indicates a bad PSU, either the PSU is dying or it gets way too hot because of dust, it could also be a voltage related issue, these PSUs will only function well between 200v and 240v, outside of this range in either direction usually creates problems, so you want to check your voltage as well.

There are few more things that need troubleshooting but the info you provided is not enough, please create a new topic and post the following:

1- Complete Kernel Log
2- Miner Status page

and of course, any more info you have on this, like was the miner working fine for a long period before? is it brand new? any piece of info you can provide will increase the chances of someone here giving you the right answer.

True, it's worth mentioning that these PSUs are different from the old APW3/APW7, with the old models you could easily check the voltage at the 6 pin cables, the APW9 and APW9s need to have some sort of load to give you that 18-19v reading, so if it's not attached to a miner, you can't really test it, I also noticed that once you the power miner on it will read the normal voltage of 18-19v and then drops for a while, so taking the voltage readings isn't all that simple.


Don't listen to bitmain, I can tell you with certainty that members in this form are more capable of troubleshooting these miners than Bitmain's support, I don't claim we are better than their tech guys, but without a doubt, we are a few years ahead of their support team, I mean look at all the silly things they asked you to try


If you do this, your miner will be locked forever, I doubt that guys in Vnish team have figured out a way to break that latest firmware signature, so by doing this you can't even roll-back to previous bitmain firmware, and if for whatever reason the miner doesn't like the latest firmware, you will have to buy a new control board, this indeed is very stupid advice coming from Bitmain.


Since you changed the bad hash board location and the problem follows that hashboard then it can't be a PSU issue anymore, if you disconnect 2 hash boards and the bad one works, then yes that is most likely a PSU issue, but for your case, it's a dead hash board, refer to this topic for tips and tricks, chances are slim but you lose nothing if you try.

Your rejected shares rate isn't perfect but it's also nowhere near bad, it's just normal, also it seems like you have the auto-tuning going on, which will affect the results to some degree, all the information you posted are irrelevant, all that matters is the accepted hashrate that shows on Slushpool if it's within the 1+-% range of what appears on the miner status page - then you have nothing to worry about, of course, the reading should be taken after the miner has been running for a long enough period.

لابأس اخي خالد, لقد تم التحويل وهدا txid


في انتظار الاخ icy3 المختفي لارسل له نصيبه الذي فاز به, لم يشارك في المنتدى من فترة اتمنى ان يكون بخير.

---

شكرا جزيلا لكل من شارك في المسابقة واتمنى ان نكون جميعا  استفدنا بعض المعلومات الجديدة.

Seems like a PSU issue to me, the best way to troubleshoot this issue now would be disconnecting chain 0 and chain 1, leave chain 2 only, allow the miner to run for 30 mins and then post the new kernel log, also, you might want to give the PSU a good dusting, it could be acting funny because of the high temperature.

If that doesn't fix it, try custom firmware like Asic.to see if that gives you any different resutls.

I say look at the bright side of things, newbies won't be entering this mining mania near the top, people seem to forget that we have been in this bull cycle for almost a full year and it shall end in a couple of months, I know this may sound funny and ironic at the moment, but a few months later my post would make a ton of sense, many miners won't manage to ROI their gears. IMO, if you are not already well-positioned in the mining industry - it's probably a little bit too late.

As for the four points you suggested, I have to agree with what phill mentioned.

Why would you do that? all those Ebay firmware is nothing but rip off, most of them have dev fees and then you pay just to download it, all other reliable custom firmware are free to download you just pay dev fees 2-3% some are even dev-free.


There is no command line, just edit this line


to this


And hit Enter, the fan option will show and you set the fan speed once only.

I swapped a dozen of S9s hash boards and never faced the code/product-ID problem, it only started to appear with the S9k/S9se, and moving onwards to the latest gears, you will notice that each mode has a few code numbers identified as product number, mostly 4 of them [0,1,2,3], usually, the kernel log reads that number before it does anything else, on the S17 pro this is what you get


It's different with every miner and firmware version, but it's easy to spot, you want all 3 hash boards to have the same id, if one is different the miner won't work, based on a random (unverified) observation of my own, if you bought the same batch, your chances will be a lot higher.

Bulk sales have been always everyone's favorite, especially when both bulk and small pay the same, even better when the bulk buyers pay in advance, dealing with 1 client with 30k miners is a lot easier and cheaper than dealing with 15k clients for the same 30k miners, it's common sense.


It used to be easier back then, nowadays with these massivly funded whales, i bet your order total needs to be a couple thousands of gears if you want to sit down with their sales manager.

There are a few things I would check, the first one would be the PSU, power off-chain 2 and 3, this will confirm if the problem is a bad PSU (a very common issue) or your Chain 1 has other problems, once that test is done, if the PSU is fine and the board still shows 0 frequency and hashrate, your next move would be changing the tunning profile, what is your profile settings as of right now?

On a side note, BinancePool sucks.

You can't, the signal travels from the 1st to the th63 chip, the control board will only power the hash board if the signal moves uninterrupted all the way to the 63th chip, although I have seen some work with 52 Asics, I guess that is because the chips are divided into domains, so only a few chips can actually be isolated and that is a rare case, I don't know the inner workings behind it but the short version of the answer would be "NO"


Yes, there is, here is a perfect and simple tutorial https://www.youtube.com/watch?v=378FPjkHQJc , you can find many more on Youtube.

Riot alone has an order of over 30,000 miners, and they will receive the last batch by October 2021, this is one company out of the many large industrial-grade mining orders that hit Bitmain in late 2020, Bitmain staff and robots are probably working 24/7 but there is only so much they can do, the production of mining gears is capped by chips production from TSMC, large companies like Intel, AMD and Apple can hardly get enough chips for their production, Bitmain, and the other mining manufacturers are the "small fish in a big pond".


Nobody knows, but we know it's very unlikely to be before September, I mean even if they re-stock next month, chances are you won't get the gears until the end of September, and that is being very optimistic, the Aug batch was sold in no time, I am pretty sure Bitmain only put a small portion of their products for the public as a "courtesy" to its small clients, but with whales like Riot joining the mining industry, small miners will be ignored and your will only option would be over-paying the resellers, which isn't something you want to do before thinking twice 10 times.

You mean one hash bord and not one card, at least this is what we "miners" call them, anyway, what custom firmware are you using? most custom firmware will allow you to set static fan speed, you don't have to go back to the stock firmware if you don't want to, and if you do, make sure you don't upgrade to the latest set of firmware versions that say "signature / secured" or anything like that because it will lock your miner.


It depends on which firmware that is, this isn't some standard coding, every firmware has its own code.

You can do a split-room setup, check my mini mining farm, I initially had an AC there but it was removed later own and I added more fans both on the intake and the exhaust, this design helps you control dust and noise by trapping all the hot air in one place, make sure you don't have pressure imbalances.

Of course!. Nearly all PSUs have temp protection and they will shut-down to protect themselves, a very common issue that miners face on a daily bases is their PSUs shutting down due to heat mostly caused by dust and/or not enough space between the PSU's and the wall/other miners,


What's behind the PSUs exhaust is what matters most, but still a bit of spacing between the miners will help cool down the PSUs a bit.