The most common result for users looking for a functional San Andreas experience on PSP hardware involves a clever workaround, rather than a direct port.
The search for is the retro gaming equivalent of alchemy—trying to turn lead into gold. While dedicated modders have managed to get CJ walking through a low-resolution Los Santos for a few minutes on a PSP 3000, the hardware limits are insurmountable. Gta San Andreas Psp Eboot Pbp -UPD-