Yes. the emulator gpSP is a psp gba emulator. some versions require a CFW to run, but there is a SIGNED version that you can run on a OFW. First create a folder called gpSP and then extract the EBOOT.PBP and the other files/folders into that folder. then place your gba roms into the roms folder(if its not there create one). Then plug your psp into your computer or your memory stick into a card reader. Go to X(the drive it is called)://PSP/GAME and move the gpSP folder there. safely remove your psp/memory stick from card reader and reinsert into your psp, and start it up. when you select memory stick from games menu, you should see gpSP logo and that is your emulator. Start it up and it should work. If you need to learn how to run said emulator, youtube has a nice tutoral for it.