correct. it did say corrupt when i changed the keystone.I see. weird that it doesn't work. it must be detecting the right keystone for it to display that message or else it would've said it was corrupted most likely.
Probably have to change the one in sce_sys folder of the game itself.So one weird thing that i already saw is that even though i changed the keystone in the EU pkg, it still defaulted back to the fake keystone. Interesting.