Despite widespread interest, was never officially released for the PlayStation Portable (PSP). Because the PPSSPP emulator specifically runs PSP software, there is no "official" GTA San Andreas ISO file for the platform.
The Technical Reality of Running a PlayStation 2 Game on a PlayStation Portable Emulator
It is technically impossible to play the official Grand Theft Auto: San Andreas using the PPSSPP emulator.
While Rockstar Games never released San Andreas for the PSP, the modding community achieved something remarkable.
However, the modding community has developed several workarounds, including and fan-made ports that allow players to experience the world of Los Santos through the PPSSPP emulator. The Reality of GTA San Andreas on PSP
However, there's an important clarification: . The PSP titles in the series are:
To understand why a standard GTA San Andreas ISO does not exist for PPSSPP, we must look at the hardware disparity.