There is no official (GTA 5) ISO for the PSP or PPSSPP emulator. Any "GTA 5 PSP" file you find online is either a fan-made mod based on older games like GTA: Vice City Stories or is a fake file that could contain malware. The Reality of GTA 5 on PSP
While there is no official release of Grand Theft Auto V PlayStation Portable (PSP) gta 5 psp iso download top 19
: Place the ISO in the PSP/GAME folder on your device. Top Ways to Experience GTA 5 Style Gameplay Report: GTA 5 PSP ISO Download Top 19
Below is a guide to the top modded experiences and how to set them up on your device. 🎮 Top 19 GTA 5 Style Mods & ISOs for PPSSPP What it claims: Complete story mode, all characters