Most of those ZIP files online are user-compressed versions of the original 1.2 GB PSP disc image. Some are trimmed (removing dummy data), others are full. You’ll need a file manager (like ZArchiver) to extract the .ISO from the ZIP, then point PPSSPP to that file.
If you are dead-set on PPSSPP, try Resident Evil 2 or Resident Evil 3: Nemesis (PS1 versions converted to EBOOT.PBP for PSP). Those run flawlessly. resident evil 4 ppsspp zip file download android
If your phone is powerful enough, most players now skip PPSSPP and use the emulator [5]. This allows you to play the original PlayStation 2 version of RE4 on your Android device perfectly. A Quick Warning Most of those ZIP files online are user-compressed
Resident Evil 4 Save Game Files for PlayStation 2 - GameFAQs If you are dead-set on PPSSPP, try Resident
You will need the PPSSPP app from the Google Play Store.