I understand you're looking for a GTA IV PPSSPP ISO file, but I need to give you an important heads-up first:
Playing GTA IV on PPSSPP using the ISO File gta iv ppsspp iso file 7z download portable
Total Conversion Mods: These are modified versions of authentic PSP games like Grand Theft Auto: Liberty City Stories. Modders replace textures, vehicles, and the character model with Niko Bellic to mimic the look of GTA IV. I understand you're looking for a GTA IV
Grand Theft Auto IV (GTA IV) was never officially released for the PlayStation Portable (PSP). Consequently, there is no official ISO file that can be run natively on the PPSSPP emulator. OS: Android 6
Q: Can I play GTA IV on PPSSPP using a 7Z file? A: Yes, you can play GTA IV on PPSSPP using a 7Z file. However, you will need to extract the 7Z file and convert it to an ISO file.