To play Resident Evil 4 on PPSSPP, you'll need to download the game's ISO file. The ISO file is a copy of the game data, and it's essential for playing the game on the emulator. Here's how to download the ISO file:
Switch between Vulkan (better for newer devices) and OpenGL (better for older devices) to see which performs faster.
How to Install and Play Resident Evil 4 on Android Using PPSSPP
Before diving into the installation process, it is important to clarify what version of the game you will be playing. Capcom never officially released Resident Evil 4 for the Sony PlayStation Portable (PSP).