Flashing S9 Control Board Without SD

[zachf]

Hey guys, I have a bunch of S9's with security firmware that we are trying to load with another firmware, but unfortunately we've found most of these machines to not have the SD chip that allows flashing (see picture below).  My question is how do I flash this thing if I can't SSH, load through the web UI, or flash via SD?

https://imgur.com/a/3jEgg4C

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[BitMaxz]

To flash it through the SD card you will need to download the t9+ program recovery from Bitmain. You will get the SD card program recovery from here "T9+ Program recovery". You don't need SSH access to make it work what you need is to move the JP4 jumper to the right position to make it work.



The whole procedure how to flash it through SD card can be found here "S9 series (S9, S9i, S9j, S9 Hydro) Control Board Program Recovery".

With or without SD card IC/Chip it should be work except for the c5 control board. So Sd card flashing should be work but if it's not working you will need the USB to serial converter to connect directly to the control board. You can follow the guide from here "Rescuing a bricked T9 (and S9?) Control Board - HOWTO.

[thierry4wd]

Is not possible to flash this by SDCARD , so lost one chip on control board ...

So , if you shearch on this forum, you find solution !!!


https://bitcointalk.org/index.php?topic=5205533.0

[Artemis3]

Hey guys, I have a bunch of S9's with security firmware that we are trying to load with another firmware, but unfortunately we've found most of these machines to not have the SD chip that allows flashing (see picture below).  My question is how do I flash this thing if I can't SSH, load through the web UI, or flash via SD?

Well first you need to find a way to restore SSH access, one of the methods i know involves downgrading to the earlier firmware from 2019 (may?) from Bitmain, and then executing one of the exploits involving the html server. Once you restore SSH, you can proceed to liberate your miner.

I know you can install the Free and Open Source Software Braiins OS using this method (using a simple python script). For other firmware it depends.

[mikeywith]

With or without SD card IC/Chip it should be work except for the c5 control board.

It won't work, that missing IC is responsible for the flash, regardless of the control board.


Op depending on the Firmware version you have, unlocking SSH access might be very easy to do, Asic.to has a nice tool for that > https://asic.to/ssh-unlock/, and you can unlock all miners at once.

Once you unlock SSH and remove the signature, you should be able to install any firmware you want.

[BitMaxz]

It won't work, that missing IC is responsible for the flash, regardless of the control board.

If it will not work why the sd card slot is there?  What is the purpose of having an sd card slot on the S9 control board if it won't work?
There is an s9 miner made without an SD card like the CRT0301 model so that the one does not have IC behind the SD card slot should be work.

I'm just comparing them on Mobile clones that don't have IC behind the SD card slot but still, it's working fine.

Why not, let's wait for him to test to verify since the line of the SD card slot is on both sides and maybe the missing IC is not for SD card.

[mikeywith]

If it will not work why the sd card slot is there?  What is the purpose of having an sd card slot on the S9 control board if it won't work?

This one of so many things that bitmain does for no logical reason, i am on the same page with you here, you put an Sdcard slot for what?? But with that missing IC it won't work, the same thing happened to someone else before, with a bit of digging you will find it i guess.

With that being said, he should try a few times with different sdcards, chances are slim but worth it, if it doesn't work, he has to work around it by following the other possible ideas presented here