I upgraded my fat PSP to the official 6.60 firmware then installed CFW 6.60 ME edition. I can access the recovery boot menu by holding R when the system launches so the firmware appears to be installed correctly. However when I try to launch any games or homebrew the PSP loading screen boots up, hangs, then the system powers off. This also happens when trying to load Hellcat's Recovery Flasher, so I haven't been able to successfully downgrade the firmware. I'm getting really worried something messed up somewhere, although the recovery boot menu works and my PSP does still boot up, just none of my games or apps launch. Any suggestions? I haven't messed with my PSP in years so I was trying to get it all fixed up.