havn't put 4.3 on.....just trying to restore from 4.2.1 to 4.2.1. (I installed openssh, and it was draining my battery, so went for restore) It keeps giving me errors. First is error 1013. I tried 'exit recovery' in tinyumbrella, just resets phone but stays in DFu mode i believe it is. Tried putting in hashtags in hosts file. Tried getting rid of the apple.gs lines alltogether, but then when I try to restore, itunes gives me 'iphone cannot be restored at this time....contacted or is temporarily unavailable'. what now?????