Ps5 edm-40 blod

[Puuhis79]

Ps5 came with only beeps nothing else, i hook up uart -> ram bank4 error (hynix chip) ordered same type, replaced chip with bga station, now gives fan spin and blod 1s
and uart gives 80801F12 code… tried to look up the code but no succes. Atleast message for ram bank4 is gone

[Puuhis79]

Update, I replace RAMs 2, 5 but same code still, next plan is starting to replace rest RAMs one-by-one to see if code changes...

[Puuhis79]

Update:

RAM´s 2 and 5 are changed, still same code... So 2,4,5 are changed...should I continue changing the rest or something else?

[notedop]

Have you been ever able to fix this 80801F12 error code? I've got one with the same error. Also EDM-040. Originally completely dead because it missing the NOR chip. I flashed one from another EDM-040 donor board and then it came to live. The original error codes where pointing to the SSD controller, SSD PMIC. After clearing the codes I now only get the 80801F12.

First thing I'm thinking is that I didn't update the serial and board ID in the NOR to match the actual. If that doesn't work I'm thinking it might be the SSD controller. Interesting enough the previous owner had also worked on the RAM IC's. Not sure if they got replaced or just reflowed.