First I tried to unbrick a psp slim, the process started off fine, then right before the m33 files should begin to flash, the the psp shut off. Tried to turn it on, found out it was a full brick. Then just to check if the problem wasn't specific to that psp, I tried to downgrade my phat psp. The same thing happened. But i fixed the phat psp with a physical nand restore. But there wasn't a nand dump for the psp slim (its not my psp). I've tried using different pandora batteries. Tomorrow I'm going to remake the memory stick. Any suggestions on what else I could do?