Use ZArchiver to unzip the .7z or .zip file. Open PPSSPP: Launch your emulator app.

“the game already had to be downgraded in order to run on a ps2, i can't even imagine how much further downgraded the psp port would've been” Reddit · r/residentevil · 3 years ago

: Emulators can often scale graphics beyond original hardware capabilities.

🚀