: You will not be playing the full console version of GTA 4. Most "PSP ports" are just visual skins for older PSP GTA titles. Better Alternatives
PSPISO.club was a repository for ISO and CSO files. If you have a modded PSP (Custom Firmware or CFW), here is how the process generally worked for legitimate PSP games: Pspiso.club Gta 4
However, users should exercise caution. While the site is an active repository for emulator files, third-party ROM sites often come with risks: : You will not be playing the full console version of GTA 4
Rockstar Games developed GTA 4 specifically for the high-end hardware of the PlayStation 3, Xbox 360, and PC. The PSP’s hardware was technically incapable of running the RAGE engine used for Niko Bellic's adventures in Liberty City. Pspiso.club Gta 4