If you want to play a legitimate GTA experience on your PSP, you should look for these official ISO or CSO files:
that use textures and character models (like CJ) from San Andreas to mimic the experience. gta san andreas psp iso cso zip file download upd
If you have found a reputable fan-made mod or compressed "ISO" for PPSSPP, follow these general steps found on community guides: If you want to play a legitimate GTA
The PSP version of GTA San Andreas was released in 2006, offering a similar gameplay experience to its console and PC counterparts. The game features a vast open world set in the fictional state of San Andreas, which is based on California in the early 1990s. Players control Carl "CJ" Johnson as he returns to his hometown of Los Santos after a five-year absence. Players control Carl "CJ" Johnson as he returns
Most "GTA San Andreas PSP ISO" downloads found online are actually of other official GTA PSP games, such as Liberty City Stories or Vice City Stories , or port-like mods designed to run on the PPSSPP emulator . Essential Facts About GTA San Andreas