Ok i have a PSP phat with 3.93 m33 currently installed onto it and i want to uninstall the custom firmware on it, and revert to using official firmware. I have tried to use the 1.50 recovery EBOOT.pbp, and was hoping to upgrade to the latest official firmware from that. but whenever i try to run it, my PSPs screen goes black and it turns off.
Do you guys know how i can resolve the problem, or know any other way I can simply update my PSP to latests sony official firmware?
thanks in advance