my ipod has been acting up alot and showing blank screens when i press the sleep button. I DID jailbreak my ipod using jailbreakme.com appsnap. Now i figured that restoring my ipod via itunes would work but i was wrong. I did the whole "hold sleep and home button till the apple sign come up" and then restore it but when it went to actually restore it it said it could not be restored:error -50. Please help!!!!!