CSO File Extension - Open .CSO files

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Common File Extensions

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.CSO File Extension

TIP: Run a free scan for .CSO file extension errors.

File Type

Compressed ISO Disk Image

Popularity

Average

Category

Disk Files

File Description

Compressed .ISO disk image format used for archiving PlayStation Portable (PSP) games; may include up to nine levels of compression, but higher amounts of compression may cause the disk image to load slowly.

Program(s) that open cso files

Mac OS

Prometeus

Windows

UMDGen

CiSO Converter

PSP ISO Compressor