Hi , i have a 3.71 m33-2 phat psp. I turned on my psp normally today and rite when it went on the xmb it turned off. I tried it multiple times but the same thing happens. It worked fine before that and i nvr had this problem before. I tried using the recovery folder but it turns off in like 5 seconds it self. So i cant really access that. IS it semi - bricked? How do i fix it with out using the Pandora box method. I just want to downgrade bak to 1.5 if thats possible.