I have been trying and reading around for the better part of a week so I finally came here for some help. I have a jailbroken ipod touch 4g running on ios 4.2.1 and want to update to 5.1.1. I have tried everything possible that I know and that I have read to restore it but I keep getting an error. Can anyone point me to a working solution? Below are all the things I've tried so far: Tiny Umbrella, removing Cydia, editing the "host" file, and probably others I just can't remember! Please help!