If you are attempting to curate a full library of PSP games, relying solely on pre-compressed CSO archives can be a mixed bag.
Drop your CSO into (Windows, Mac, Linux, iOS, Android). If it runs smoothly, you’re good. cso psp archive full
csotools on GitHub provides command-line utilities for compressing and decompressing. If you are attempting to curate a full
A curated CSO archive allows for a cleaner, more navigable library on custom firmware (CFW) menus. How to Create Your Own CSO Archive Android). If it runs smoothly
archiving. Originally developed as the "CISO" format, it remains the standard method for compressing large UMD disc images into manageable files that fit onto modern memory sticks.