I have psp 3004 and it was using 6.60 pro b. My psp was very old and i forgot that I installed custom frimware. And I saw that there is a new system update, and it was 6.61 and I updated it to 6.61. And i cant play games again. I know, I need to install custom frimware again but which one? Pro-c infinity? Or just pro-c or I can still install pro-b? Idk. I need help. And If I install custom firmware, will my games be deleted? Or have my games already been deleted? I just need someone to explain to me what to do. Please, I need help. (And of course my psp is still working.)