I updated one A300 from 3.60K to this this 3.71A and it went without any problems. System boots fine. Then updated another A300 from 3.60U to this this 3.71A and that is now bricked. So I assume any 3.60S or 3.60U with Renoir support will break the A300.
You said you manged to fix this. How did you do it? I would like to get my good old A300 back again
Well, to fix this, I ordered a CH341A USB programmer and used it to flash back a working BIOS.
The computer needs to be completely unplugged. No power whatsoever.
I also removed everything beforehand, such as RAM, CPU and SSD, but I don't think it's required. I just didn't put it back after following some procedure from Asrock support.
I used several tutorials for directions, such as here and there, but in short:
- I put the provided adapter (card with pins) in the 25xx part of the USB programmer and plugged the clip.
- Then I put the clip on the chip, making sure the first pin of the chip (marked with a small circle) was connected to the first pin (red wire) of the tool.
- Finally, I used flashrom (from Linux) to read the BIOS (and check everything worked), before writing a different BIOS version (3.60S).
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