HELP Me plz freezing problems

Ok so here's my problem. I have a hacked psp 4.01 m33-2 and right when I turn it on it freezes for some couple of seconds and takes like 6 seconds intervals of freezing, i can't move it and after about 15 secs it shuts off. OK, so I UNHACKED it, and now it works perfectly fine. WHAT THE HELL!!!???!!! I tried to hack it again and when I did it keeps freezing. I've tried 5.00 m33-6 and 3.71 m33 as well. Don't even mention gen cuz i already tried that too.

what psp do you have?

psp-2000, god of war psp to be specific.
H
E
L
P!!!!