Hi.
I'm using PSP 1000. I wanna upgrade the firmware to 5.03 prometheus cfw, so I needed to downgrade my PSP from 3.52 to 1.5 first. Then I need to upgrade to 5.03 OFW before installing the CFW.

I can't use the recovery menu to downgrade. After I choose "Run Program in Rec folder", it just goes blank, and turned off. Then I found out that I can use Hellcat Flash Recover 1.65. I backed up the 1.50 files using it, no problem. After restoring to the back up I just made, it goes on well, and prompted me to press any button to finish, and then was turned off.

When I tried to turn it back on, the screen just goes blank. The light is green. Thought it was bricked, but its not. Cause the green light won't go off if I don't turn the power off. And I don't have a pandora battery to begin with, if that's the case.

What do you think? I need to send it to Sony? Or can I use pandora?