I tried to downgrade my PSP to 1.50 OFW using Hellcat Recovery and when it was over, the PSP turned itself off like it was supposed to and the green light started blinking. But now the PSP doesn't turn on. It just stays with the green light on but the screen doesn't turn on. Can someone please help me? I've waited a long time to get a PSP and this happened before I could properly use it. Any help would be greatly appreciated.