: The PPSSPP - PSP emulator only runs games designed for the PSP. Since there is no official UMD or ISO for this console, a "legitimate" Resident Evil 4 experience is not possible on PPSSPP. 2. Fan-Made "PPSSPP ISO" Mods
It is important to note that the PSP version of Resident Evil 4 (often found in ISO or CSO format) is a distinct port. It is not a direct copy of the PlayStation 2 or GameCube versions. resident evil 4 ppsspp iso full
If the hassle of patching and the buggy nature of the PSP mod frustrates you, consider these superior alternatives: : The PPSSPP - PSP emulator only runs