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How to compress your psp backups' ISO files into CSO files to save space.

$How to compress your psp backups\$

In this Instructable I will show you how to compress your psps' backups from ISO to CSO to save space on your memory stick, using only one piece of software that is usable with Wine In Ubuntu. You will also need a CFW (Cusstom Firm-Ware) psp to make any use of this.

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Step 1Get the software

Get the software

All you need to complete this Instructable is YACC, and If you are using Linux or mac, you will need Wine to emulate a windows environment.
You will also need a backup of your UMD game, in an ISO form.

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8 comments

Aug 8, 2011. 12:21 PMMonkeyBoy3217 says:

This Program doesnt compress files larger than 2GB :'(

Dec 17, 2009. 2:52 AMFashim says:

How good is the Compression Say a 500MB ISO how much would it be as an CSO?

Dec 18, 2009. 11:14 AM

Steamdnt (author) says:

Personally, I ahve never had any troubles with the compression, so I would say excellent!

Jun 30, 2009. 10:04 PMN1CK4ND0 says:

Ubuntu rocks! I use it for my Home PC's.

Apr 5, 2009. 6:41 PMskriBBlez says:

Awesome!!! Thanx alot man,imma try this

Jun 4, 2009. 9:02 PM

Steamdnt (author) says:

no problem have fun

May 10, 2009. 11:08 AMDerin says:

How can I convert CSO to ISO?I need ISO for an experiment but I can only find CSO's.

May 15, 2009. 7:16 PMCartuner55 says:

on YACC there is an decompression tab

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