Serious Error has occurred/rsod

Hi

the ps3 I have here had rsod problem. rsod_fix.pkg fixed the issue.
after a month , it freezed during the game's loading.

So turned it off manually and turn on again. the screen says "Serious Error has occurred etc"
things I tried:
noFSM methodm, FSM method, replace NOR(spansion), another NOR(samsung), replace cvtrm
area with a donor(working one) , read/write via e3 linker

in all cases above still same problem.
I cant toggle to FSM cause the first things pop up is that error.
I access...

Serious Error has occurred/rsod