The PlayStation Portable (PSP) utilizes various disc image formats for software backup and playback on custom firmware (CFW). While the (Compressed ISO) format was developed to optimize storage on expensive Memory Stick Pro Duo cards, it often introduces performance bottlenecks including increased load times and in-game stuttering due to on-the-fly decompression. This paper explores the technical differences between these formats and provides a procedural guide for converting CSO files back to the uncompressed ISO format to restore original performance. 2. Comparative Analysis of Formats
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? psp cso to iso