Hello guys. I'm now trying to Upgrade my iPhone 4 iOS 4.1 to iOS 4.2.1 , But it keeps showing me error 1013 and 3194. I tried editing hosts file and DFU mode first and now my iPhone 4 is stuck on DFU Mode. I tried kicking it out with TinyUmberlla but it kicks out and gets back into DFU, I also tried doing DFU without it being connected the the Mac and without. What's wrong?!