Grand Theft Auto V (GTA 5) is an iconic open-world action-adventure game that has captured the hearts of gamers worldwide. While it's widely available on various platforms, some enthusiasts may be interested in playing it on their PlayStation Portable (PSP) device. Although GTA 5 was not officially released for the PSP, we'll guide you through the process of downloading and installing a GTA 5 PSP ISO file.

The concept of playing GTA 5 on a PSP is unique because the hardware of the original PSP is not powerful enough to run the full version of the game seen on PS4 or PC. Instead, these ISO files are usually highly customized "mods" or "fan-made versions" based on the GTA: Liberty City Stories or Vice City Stories engines. These versions are redesigned with GTA 5 textures, character skins like Franklin, Trevor, and Michael, and updated vehicles to mimic the modern experience as closely as possible.

Ensure your PSP device has a custom firmware or homebrew support. This will allow you to run the TP Install tool and install the GTA 5 PSP ISO file. If you haven't already, install a custom firmware like Henkaku or Ensō.

Keep in mind that playing GTA 5 on PSP comes with several challenges and limitations: