The easiest guide to show you how to Jailbreak iPhone 3G on iOS 4.2.1. Easy how-to videos and instructions walk you through exactly what to do. We'll teach. Feb 3, 2011 The GreenPois0n untethered jailbreak for iOS 4.2.1 was released a few minutes ago and I already took it for a spin on my older iPhone. Aug 11, 2010 Step 2: Download iOS 4 (not iOS 4.0.2) for iPhone 3G to your desktop from Step 1: Jailbreak your iPhone using the method described above. Feb 15, 2011 The Dev Team just released PwnageTool 4.2, a jailbreak for iOS 4.2.1 for iPhone 3G, iPhone 3GS, and iPhone 4 (AT&T and Verizon), as well.
Nov 28, 2010 How to Jailbreak and Unlock iPhone 3GS and iPhone 3G with iOS 4.2.1 and Redsn0w 0.9.6b5. If you are wondering how to use redsn0w.