Well emulation is playable on 2.5 - 2.6 if you have GTA...look it up on PSP updates. I myself like it better than how emulation ran on 2.0, that seemed to freeze up my PSP alot. GTA exploit you just load it up from GTA, and when you enter the emulator you can exit back out to the emulator list and from there exit out to the psp like a real game.