Level 9 is best for storage, but level 5 or 6 is often recommended as a "sweet spot" for maintaining fast load speeds.
If your CSO PSP Archive isn't working, try these fixes: cso psp archive
: CSO files are lossless compressed versions of ISOs that can reduce a game's size by up to Compatibility Level 9 is best for storage, but level
Retro archivists are moving toward the (Compressed Hunks of Data) format. Originally designed for CD-ROMs (PS1, Sega CD), CHD now supports PSP. CHD offers 5-10% better compression than CSO with faster random access. Level 9 is best for storage
In most countries, downloading a copyrighted PSP game in CSO format is illegal even if you own the UMD, because you are circumventing copy protection. The safe harbor is dumping your own UMDs.
