I'm running a PSP3001 with 5.03 M33-6 thanks to CFWEnabler v3.30, but it looks like my NesterJ doesn't work anymore.
I grabbed
NesterJ 1.11 RM since my old copy from my other PSP was one of those 1000-only ones that had two folders, but while it runs it doesn't want to actually load any ROMs. I just get the message "NES ROM cannot be found" if I try to run a zipped one, and trying to load an unzipped copy of Castlevania II just gave me a blank grey screen. It didn't freeze, I could still access the NesterJ menu, but it wouldn't play.
Is there a version of NesterJ that'll work on a PSP-3000? Did I just goof something up? The only thing I can think of is that the file paths might be too long, but that doesn't explain the grey screen of undeath...
:EDIT: I guess it can't run zipped files and the CV2 was bad. Unzipping the other games made them playable, though my old saves and savestates are apparently useless.

Other than that, the only issue is that it crashes if I go into the menu and try to change ROMs to a different game; I have to exit the program completely in order to change ROMs.