Converting is a common task for retro gaming enthusiasts who want to restore compressed game files to their original, uncompressed state . While CSO (Compressed ISO) files save space on memory sticks, they can sometimes cause performance issues, such as longer loading times or frame drops in hardware-intensive games like Grand Theft Auto: Liberty City Stories or God of War: Chains of Olympus . Why Convert CSO Back to ISO?
CSO is also short for technology terms that don't have anything to do with these formats, like computer security officer, C shared... Lifewire Show all Feature ISO (Standard) CSO (Compressed) File Size Larger (Uncompressed) Smaller (Saves ~15-25% space) Performance Faster load times May cause stuttering/lag during decompression Compatibility Universal on all CFW High, but some games/homebrew may hang Quick Decompression Steps Download a tool like psp cso to iso