After using a custom ipsw on my iPhone 2G 3.0, it was all fine until I went to restore with a brand new unlock and jailbreak with redsn0w... I started by restoring in itunes to a vanilla 3.0 ipsw, which worked fine, then I tried to run redsn0w, ran through the processes then got the the "waiting for device to reboot" a few times, which happened almost instantaneously, and my phone just sat there with a lit-up black screen, and when I rebooted it myself it was still how it was beforehand, unactivated and useless.

I am running Windows 7, and tried both vista and XP compatability mode, administrator-rights, etc. nothing works. When I try to go back to a custom ipsw in iTunes, I ALWAYS get Error 1600 in DFU mode, and 1604 in Recovery Mode...

HELP! PLEASE! I need my phone, and at the moment it is a paperweight