If you still want to find ISO files, use:
Grand Theft Auto: San Andreas was originally developed for platforms like PlayStation 2, Xbox, and PC. It never received a native PSP port, meaning a true PSP ISO does not exist. What these files actually are: gta san andreas ppsspp iso file fixed download highly
If your game is "fixed" but still has issues, here is what is usually wrong: If you still want to find ISO files,
Some PPSSPP users report issues with: