If you are looking to download a highly compressed version of Resident Evil 4 for the PPSSPP emulator or a modded PSP, here is everything you need to know about the current fan projects, file sizes, and installation steps. Resident Evil 4 on PSP: Fact vs. Fiction

The original Resident Evil 4 is a massive game, requiring anywhere from (original PC/Quest) to over 60 GB (modern remakes) of storage. Because the PSP’s standard Memory Stick Duo capacity was limited, and mobile users often have restricted storage, fan versions are often "highly compressed."

To play these fan-made versions on your Android device or PC, you will need the PPSSPP Gold Emulator or a standard version of the emulator. File Size: 67 GBs - Resident Evil 4 - GameFAQs