gameboot

I installed gameboot on my psp go, some screens was working but the last video haved an error and the psp put on black screen, now i cant boot anything, can have a fix for it? thanks

Im looking to make a gameboot im looking for a good tutorial all i can find is tutorials from 2007 such as this one: http://www.pspmod.com/forums/digital-art/23017-how-make-pmf-file-gameboot-coldboot.html I started following this tutorial and the programs have been changed and updated it...