Originally Posted by butnut
I really don't see how this would work unless rogero did something to the firmware, because currently publicly available lv2diag files don't work on 3.56+
If this really does work then we should be able to resign the lv2diag files and downgrade ofw 4.21. But I can't believe it would be that easy.
It doesn't hurt to try, what's the worst that could happen if your PS3 is already bricked?