Saw this post on Lifehacker: http://lifehacker.com/5847135/upgrade-to-ios-5-right-now I put the phone into recovery mode and I tried pwned DFU as well. When I try to restore using the ispw I have been getting error 21 and error 1600. I used to get this before when I had difficulties downgrading my iPhone which I never got fixed. Its a Verizon iPhone on 4.2.9. Tiny Umbrella isn't running. What should the host file look like for me to be able to ping Apple's servers? **Edit** Figured it out. Little Snitch was causing issues.