ok...i pm'd you back but now i know what you're having problems with
did you set your umd iso driver back to m33 or the sony driver via select button on main psp xmb??? if not, do that...
2nd, are you installing emulators or homebrews that have 2 folders with the same name but 1 has a % symbol in it?? if so, that's for 1.5 kernels and 5.50 does not support that...not a big deal, you need the more up to date emulators for 3XX kernels or anything made for a slim psp.
post back, give me more details
