Umdgen -

is a popular, free Windows-based utility specifically designed for manipulating PlayStation Portable (PSP) ISO and CSO image files. It is a standard tool in the PSP homebrew and modding communities for viewing, editing, and rebuilding game archives. Key Features and Capabilities

Are you planning to a specific PSP game or just looking to compress your existing library? UMDGen - Data Crystal umdgen

That simplicity—two minutes, no command line—is why UMDGEN thrived. is a popular

: It is used to access and edit internal configuration files, such as engine.ini , to uncap frame rates (e.g., from 30 FPS to 60 FPS) for specific games. such as engine.ini