: A community-driven archive on Reddit containing 150+ wallpapers, 60+ themes, and 300+ official videos originally from the PSP storefront. Internet Archive How to Use CSO Files Requirement : Your PSP must have Custom Firmware (CFW) installed (e.g., PRO-C or LME) to run ISO or CSO files. File Placement : Connect your PSP to a PC and place the files in the located at the root (top-most level) of your Memory Stick. : For mobile or PC gaming, the PPSSPP Emulator

The (Compressed ISO) file format is the de facto standard for archiving and playing PlayStation Portable (PSP) Go to product viewer dialog for this item.