I have an Ipod touch 4g 64gb. It's screen is always black, and it won't turn on. It also won't go into normal recovery mode, but I can get it into DFU mode. I've hooked it up to Itunes and everytime I try to restore it I get a 1601 or 1602 error, no matter what computer I run it on. I've tried three different computers and I've tried reinstalling Itunes. Can anyone help?