Normally, unlockers should avoid this tool, because in order to use it you need to restore to a stock 4.2.1 FW which will update your baseband. But, thanks to TinyUmbrella, iPhone 4 owners who need to unlock, can update to iOS 4.2.1 and use greenpois0n without loosing the ability to unlock.

A couple of hours ago, Chronic DevTeam finally released a new update for greenpois0n which allow us to apply an untethered jailbreak to our iOS devices running iOS 4.2.1 ( and iOS 4.1.1 ). Normally, unlockers should avoid this tool, because in order to use it you need to restore to a stock 4.2.1 FW which will update your baseband. But, thanks to TinyUmbrella, iPhone 4 owners who need to unlock, can update to iOS 4.2.1 and use greenpois0n without loosing the ability to unlock.
Continue reading “HOW TO: Use TinyUmbrella To Preserve Your iPhone 4 Baseband And Jailbreak iOS 4.2.1 Using Greenpois0n”