Choose Level 5 or 6 for an optimal balance of performance and space.
If you own original UMD discs, you can dump them yourself using a PSP with custom firmware. Connect your PSP to a PC via USB, select "UMD as USB Device," and copy the virtual ISO file to your hard drive. Then compress it to CSO using maxcso. cso psp archive
Archiving your physical UMD collection into digital CSOs protects your original media from disc rot and laser wear. A digital archive on a PC or network-attached storage (NAS) serves as a permanent backup that is easy to categorize, search, and transfer. 3. Cross-Platform Compatibility Choose Level 5 or 6 for an optimal