Before diving into archives, you must understand the format. A (Compressed ISO) is a compressed version of a standard PSP ISO image.
The CSO PSP Archive is a collection of compressed PlayStation Portable (PSP) game files in CSO format (Compressed ISO). CSO files are reduced-size equivalents of standard ISO images used for PSP games; they retain full game data but use compression to save storage space. Archives or repositories labeled “CSO PSP archive” typically gather multiple CSO images, homebrew, or game backups for archival and preservation purposes. cso psp archive free
Once you have your .cso file, here’s what to do: Before diving into archives, you must understand the format