I installed a theme quite a long while ago, and I did make a backup of the resource folder, but now when I intend to go back to the default theme, the PSP doesn't start. So I'm stuck with one theme. I have 3.40oe. Will upgrading it help? Also... when PSP ISOs get compressed, does some of the game data get ripped off? I mean you can't tell me that a 800mb iso is compressed to an odd 300mb cso, with all the game date that was originally there? Or maybe you can Nevertheless, happy new year!