...5.02 or 4.00? After upgraded, all my psp system crash. and it should restore to its original version. from 5.03 down to 3.00 or 4.00. So, can anyone help me how to restore it?
Its a long and semi illegal process (selling the battery that is) that involves buying a Pandora Battery. I suggest looking it up on youtube as I have seen some useful videos on the matter.