Anyone have experience with manual bios flashing using CH431A?

[Sapir]

Hi there, 

I recently made the very stupid mistake of flashing the wrong bios on my 3070 (gigabyte 3070 Gaming OC rev 1.0, accidentally flashed the 3070TI bios). 

ever since the card was essentially dead. it is not identified by the BIOS and does not show any signs of life (fans at 100% all the time). 

I purchased the following device in a last dich attempt to save my card: 

USB Programmer Module Flash BIOS Clip CH341A 5V-3.3V Drive IC Electronic Kit | eBay

i made several attempts to flash the new bios on the chip with no success so far. 

does anyone have experience using such a device and came across issues or possible was able to resolve a bad flash? 

Thanks a lot! 

[Tan3l6]

I'm on a similar boat. I ordered CH341A from Aliexpress for my card. Found a couple of useful videos from YT.

I'm not 100% sure how useful they are, but they seem to go in depth.

and 

 

 

It seems that there are a lot of different software for the programmers.

Have not really identified which is the correct one: https://ch341aprogrammersoftware.com/

Sorry for not being very helpful, just following the thread.

[Demon Lord Bezos]

I don't know how to use that programmer but I found a couple of useful links and videos. 

 

https://www.onetransistor.eu/2017/08/ch341a-mini-programmer-schematic.html

 

 

 

Just be careful you read the part about voltages. Looks like you might need to cut the 5V from the VCC so you don't burn the bois chip. 

[Tan3l6]

By the way it's strange that search in the forum does not always show all the search results about "CH341A"

https://linustechtips.com/search/?q=CH341A&quick=1

It seems that there should be a lot of experiences. Hope it will help.

 

 

Edit: only now I realise why CH431A  does not show as many results - the one I'm thinking is actually CH341A (facepalm). But that only seems a typo?

[Sapir]

Thanks a lot for all the help! 

I had a typo in the name, CH341A is indeed my model. 

thanks to you I realized that the bios chip on my card is 1.8v (Winbond 25Q80EW) and is not compatible with my kit since it's 3.3v. 

I just ordered a conversion kit to 1.8v, will let you know if that worked or not. 

Thanks again!! 

[Kilrah]

If you tried flashing a 1.8V chip with 3.3V you'll probably need a replacement. And if you tried to do it in circuit you might have blown other components.