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format file cso

What is a cso file and how do I open a cso file?

A CSO is a compressed ISO disk image file used for archiving PlayStation Portable games. It can incorporate up to nine layers of compression, and is created by program such as Prometeus and YACC.

Windows
Mac OS
Recommended cso file download:
UMDGen
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CisoPlus!
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PSP ISO Compressor
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Prometeus
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Detail cso file extension information:
File Type: cso
File Format: Compressed ISO Disk Image
Primary Association: ISO Files