For some reason, my PSP cannot load backed-up games anymore. When I try to load one, it shows the PSP screen, then goes back to the main menu, saying the game cannot be started. It just happened at random one day. It can still do homebrew and backed-up games that don't use the UMD drive. However, my UMD drive works fine. I've tried using every combination of settings on the recovery mode. I even downgraded back to 1.50 and then back to the custom firmwares and it still does the same thing! :Argh: Please help!