iPhone 4: I did the 4.2.1 update using Tiny Umbrella (latest version) to keep my 1.59 baseband before the jailbreak. Everything seemed to go fine (I did this for 4.1 as well without issue) but this time I am unable to "kick out of recovery mode." Stuck at the USB ITUNES screen. I'm sure someone else has gone through this. Any help would be appreciated.