So I bought a white PSP preloaded with firmware 2.5 on it. I then upgraded it to 2.8, and then used the tiff exploit to downgrade it back to 1.5. It worked perfectly for about 4 months and then last night, I think I may have hibernated it while it was accessing the memory stick, because when I started it back up, it gave the "game could not be read" message. I attributed this to a corrupt memory stick, so I pushed the power switch down until it turned itself on, and then tried to reboot it. As soon as I turn it on, it just goes to a black screen and stays there forever. This is whether there is a umd in the drive, memory stick, or nothing at all. I also tried taking the battery out for about a day, putting it back in and starting it but no lock. Is my psp bricked or is there hope? Please help.