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How to Make an ISO Into a CSO File

The PSP is a portable video game device made by Sony. It was released in 2005, and immediately gained a large independent developer community. This community has created new software for the PSP that allows for the use of ISO files as a way to play games. These ISO files are exact copies of the PSP game disk and are usually about 1.25GB in size. You can compress the ISO file into a CSO and still use it the same way. There is only one program that can do this.

Things You'll Need

PSP ISO Compressor

Instructions

- 1
  Download the software from the link in the Resources section of this guide. It is called "PSP ISO Compressor" and is free. Install the software and open it. The main menu will appear.
- 2
  Click "Compress ISO" -> "CSO" on the left side of the main menu. Click the "Input File(s)" browse button and a new window will appear. Locate your ISO file and select it. Click "OK" to load it into the program.
- 3
  Click the "Output File(s)" browse button and select a place to save the new CSO file. Click "OK" to verify the location.
- 4
  Click the "Compress" button to convert the file to CSO. When the compression completes, the CSO file will be in the place you verified in Step 3.

Sony PSP