Do not download any file called GTASanAndreasPSP.iso . These are usually corrupted versions of Vice City Stories renamed, or they contain malware meant to exploit old PSP firmware. The real size of San Andreas (4.7GB) wouldn’t fit on a UMD (max 1.8GB) anyway.
: The PSP lacks the second analog stick and L2/R2 buttons found on the PS2, requiring complex control remapping for a game designed for more inputs. gta san andreas psp homebrew
The Impossible Port: How PSP Homebrew Brought San Andreas to a Handheld That Never Ran It Do not download any file called GTASanAndreasPSP