u dont downgrade the game itself, you downgrade your psp so that u can play an emulator of the system you want.. the games for cartrige consoles (NES, SNES, GENESIS) are called roms, and the games for cd consoles (saturn, ps1) are ISO's
i did the shit myself lonnnng time ago.....bout 2 years ago when there wasn't any custom firmware...just 1.5 an devhook lol
i still gotta upgrade to the new m33 shit
im on 3.40 oe...cuz i heard of some fools haven incompatible saves from older fw to the new one....but shits easy if u just read directions regarding the upgrade/downgrade process
u dont downgrade the game itself, you downgrade your psp so that u can play an emulator of the system you want.. the games for cartrige consoles (NES, SNES, GENESIS) are called roms, and the games for cd consoles (saturn, ps1) are ISO's