Open CSO file

The most common choise: CISO compressed ISO image

How to open CISO compressed ISO image .cso files

Have you had trouble opening the cso file on your computer? What are cso files? We explain what they are and recommend software that we know will open them.

What is cso file?

Files with cso extension are in most cases disk images saved in a common disk format for Sony Playstation. Very often used for backups of game disks. CSO format needs a special customized firmware so PSP can read them.

CISO compressed ISO image description

File extension cso is used for compressed ISO images. They are often used as a medium to play PSP games. The standard medium used by Sony PlayStation Portable is Universal Media Disc (UMD).

CSO format has nine levels of compression. Higher levels mean better compression, but slower loading times of compressed ISOs.

These cso files are created by PSP ISO Compressor.

CSO CISO compressed ISO file allows playing PSP games from memory card, but PSP must have installed user customized firmware, that includes support to reading of cso files.

Suggested software to open cso file

PSP ISO Compressor

A PSP ISO compressing tool

There are other CSO filename extensions with the same .cso suffix

cso - Compiled Shader Object

A cso file extension is associated with the Compiled Shader Object format.

What file extension actually is?

Simply put, file extensions are the characters after the dot in the computer file name, so for example document-name.pdf has file extension „pdf“. This helps Windows to identify which program should be used to open the file.

We can help you to open your file

Our database contains a huge list of different file extensions, usually with detailed description and programs that can be used to open or otherwise work with that particular file type.

Only original software

Every software listed in our database is verified and ve provide link to the developer or to the software own website, which should hopefuly be enough for you to download the most recent version of the program.