Gaming All CSOs not working anymore

[IAmTheRad]

Okay, they worked last night. Today they don't work. I didn't change anything on the PSP except putting in Dissidia, but I doubt that was the problem. The one small change was I removed the UMD inside my PSP because I was watching Superbad last night and didn't want to bring the umd to class.

It's not like I can't play any games, since my PS1 games I imported still work. So, how do I fix this?

 

[nIxx]

Change your iso loading settings in recovery menu to 9660

 

[taken]

on your psp press select and in umd iso mode click amd select m33 driver.
that should do the trick.

 

[AndreXL]

Like what was said by nIxx, use Sony 9660 No UMD.