I've been using CFW 3.55 kmeaw for a long time now in my Ps3 Fat (default FW 2.30, no downgrade)without major problems, but i decided to sell my PS3 so i restored it to OFW as the buyer requested. But after that, i can't update it anymore to any other FW version. I tried everything both in normal and safe mode, but nothing worked. When i try to update, it gives me an error code and says "data corrupted". In system information it says it's already in OFW 3.55, but there are some of those pkg installers still showing.
I'm out of ideas here. Is there any solution to this problem? or has my console permanently bricked?