Some UMD's And ISO's Don't Work. Why

borthwick99 · 06-28-2008, 02:22 PM

Hi, Im currently on 3.90 m33(CFW) on my psp, i was on 3.71 m33 but i couldn't play certain ISOs on my psp that i could play before i Upgraded to 3.71. i decided maybe upgrading to 3.90 may help me. it didn't. some of my ISOs still dont work. Why is this. i used to play Manhunt2 all the time then all of a sudden that and a few other ISOs/CSOs stopped working. i would be greatly overjoyed if someone could help me with my problem
thanks

NuMB3Rs · 06-28-2008, 04:03 PM

have you tried changing your UMD drivers? theres the M33 driver, Sony driver, etc.

danny563 · 06-28-2008, 10:35 PM

maybe theres a few bugs on that firmware ..

bogmire20 · 07-05-2008, 06:03 PM

try 3.90m33-3 i think it has m33 driver bug fixes

charles911 · 07-06-2008, 12:26 PM

I Sorry to be out of Topic....

BUT,CAN I ASK?? What's The use of this M33 Driver?

theumad · 07-06-2008, 02:48 PM

I have tested lots of isos on the 3.90 m33 firmware and the 3.71. The problem may be in the iso you just ripped. Try ripping it again. You can check if an io is corrupt by trying to open it on a pc or on the psp using filer.