Ok I downgraded my psp today from 2.71 to 1.5. But when i went on the video a red light pop up and after some time my psp shut down which is normal but when i tried to put my psp on it doesn't boot up. The power light comes on but the PSP doesn't boot up.... So what can I do?????? I NEED HELP, CAN ANYONE HELP ME????? PLEASE PLEASE.