However, I should clarify: . The PSP had GTA: Liberty City Stories and GTA: Vice City Stories , but not San Andreas. Any website offering "GTA San Andreas PPSSPP ISO" is likely providing a modified, unofficial, or fake file that could contain malware.
I notice you're asking about downloading an ISO file for "GTA: San Andreas" to use with the PPSSPP emulator. Download Iso Gta San Andreas Ppsspp