If you want to try one of these fan projects, follow these general steps found on sites like PCQuest :
The key factor here is hardware capability. The PSP was a handheld console released in 2004. While powerful for its time, its hardware specifications are vastly inferior to the PlayStation 3, PlayStation 4, or a modern gaming PC required to run GTA 5. Grand Theft Auto 5 Ppsspp Iso File Download
Most files labeled as "GTA 5 PPSSPP" are actually highly modified versions of or Grand Theft Auto: Vice City Stories . If you want to try one of these
You need to rip (dump) the ISO file from a physical PSP UMD disc that you own, or purchase a digital copy from the PlayStation Store (though the PSP store is now closed). Alternatively, you can find these games legally remastered on the PlayStation Store for PS4/PS5 or on the App Store/Google Play as native mobile ports. Most files labeled as "GTA 5 PPSSPP" are
: Get the PPSSPP Emulator for your device (Android or PC).
It is important to clarify that Grand Theft Auto 5 (GTA 5) does not exist as an official PPSSPP ISO file
If you're interested in GTA 5, exploring official channels to play the game on supported platforms is the best and most straightforward way to enjoy it. For PSP enthusiasts, there are plenty of amazing PSP games available that you can legally purchase or backup and play on PPSSPP.