FINALLY!! I THANK YOU SIR! I have been living with this thing and blaming the memory card since I got the multi: a few games were not working and gave me all sorts of issues:The eep rom is an 8 pin surface mount chip on the main board. I think it's a 93c type, you should spot it quickly.
They have limited read & write so are starting to go at this point in time
the first oneI’m having the same issue.
What went wrong? Poor soldering job, or was the S board being fussy with the replacement EPROMs?