btson-
Does this work for only users of TU? I saved my SHSH on Cydia only and wasn't able to restore either- so i had to comment out the cydia nameserver in the host file and go with iOS 4.3. I hate this phone now. Very depressing!
I ended up trying it. Does not work.
Ok i got it to work!
Here's what I did. I restored the 4.2.1 iOS via iTunes with the cydia name server in the host file enabled (so it does not go to the actual apple one). About 80% through the restore, i got the 1013 error and the phone restarted on its own and came up in iTunes in recovery. I tried the newest version of TinyUmbrella and used the fix recvoery option..this did NOT work. I then downloaded RecBoot..also did NOT work. I downloaded the 4.21.12 version of TinyUmbrella and did fix recovery...it WORKED! Back to 4.2.1 from 4.3
