OK! Various threads on this topic are here already. I'm currently using 3.52 M33-4 CFW. Many thanks to that guy who wrote the tutuorial. I've checked it like 23 times already. So I decided to go another step to get into 3.71 M33-2, I guess that's currently the best for a phat PSP? I followed the steps, downloading the official 3.71 update AND the 3.71 m33 followups. Copied the UPDATE folder into PSP/GAME/ directory , changed the EBOOT.PBP file to 371.PBP. But when i go into games and the extra icon I see turns out to be corrupted data. When I changed the file back to EBOOT.PBP, the games section reads the update perfectly, except it says : 'game could not be started (DADADADADADA)' and YES , my kernel is set to 3.52 and Yes , my battery is at 100% I've tried like almost everything, searched through tons of forums but they still don't have a solid answer to that problem. Any help and links to the files are greatly appreciated. Thank you.