Explained: PSP ISO Vs Eboot Files & How To Install/Play Them
You need the EBOOT.PBP file. This is typically found inside a folder named after the game (e.g., Final Fantasy VII ). Step-by-Step Installation Guide final fantasy vii psp eboot install
If these folders don't exist, you can create them manually in the root of the memory stick. Explained: PSP ISO Vs Eboot Files & How
If the PSOne Classic is still in your region’s store, buy it, download directly to PSP via app, and skip to Step 4. download directly to PSP via app