How To Jailbreak Ios 4.2.1 Untethered With Redsnow 0.9.7 B4

http://www.tribunnews.com/member/v4vnvlp334

To do that you need to pick the"Expert Mode then"Build IPSW" alternative. Our software solution will allow you to update to the most current iOS 4.2.1 and unlock and jailbreak it also. But these tools won't upgrade