CSO files are not working on PSP

[Danixu]

Hello,

I have always used your program to compress all the ISO files I have to CSO and save space on my PSP and always was working perfectly. Yesterday I have decided to use my PSP again and I have proceed to compress my library to CSO using the latest version, but I have noticed that almost all the games were not working.

I have reinstalled the firmware several times trying different CFW tinking that maybe was a firmware problem, but I got the same behaviour. My last test was to dump a clean ISO from an UMD I have, and that ISO was working perfectly. Compressing that ISO to CSO made it to fail again, so I have decided to test the UMDGen CSO compression, which is working perfectly.

I am using the default options to generate the CSO:

maxcso "Pusuit Force.iso"

The only difference between both images I have noticed, is that MaxCSO image is a few kb smaller. I have tested older versions, and the version v1.12.0 seems to be working (also is a few kb smaller than the UMDGen, but bigger than latest MaxCSO version).

Best regards.

[jcchikikomori]

Hi @Danixu Have you tried using the -o (output file) parameter?

maxcso "Pusuit Force.iso" -o "Pusuit Force.cso"

[Danixu]

Hello,

Is there any difference?, by default the program creates a cso file.

Best regards.

[unknownbrackets]

v1.13.0 added libdeflate compression, which somehow makes PSP decompression crash.

You can use --no-libdeflate to prevent libdeflate from being used even in v1.13.0, but I disabled it again in the latest git. Haven't released a new stable version yet, see 161f99d81f81716943069387bb0234ce5a1355b3.

-[Unknown]

[Danixu]

Thanks!!.