Your stock PSP cannot read CSO files. You need like PRO-C or LME.
A CSO (Compressed ISO) file is a compressed digital copy of a PlayStation Portable game disc. Originally, PSP games are ripped into standard ISO files, which can be quite large (up to 1.6 GB per game).
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Your stock PSP cannot read CSO files. You need like PRO-C or LME.
A CSO (Compressed ISO) file is a compressed digital copy of a PlayStation Portable game disc. Originally, PSP games are ripped into standard ISO files, which can be quite large (up to 1.6 GB per game).