Video: Jailbreak iOS 4.2.1 untethered with Greenpois0n on iPhone 4/3gs/3g and iPod
September 30, 2011Learn how to jailbreak your iPhone right now with this great step by step video tutorial. If you have an iPhone 4, 3GS/3G or any generation on iPod running on iOS 4.2.1, you can jailbreak it now in just a few minutes with GreenPois0n right away. This is quite literally the easiest way of jailbreaking iOS 4.2.1. Please do note that you’ll first need to download GreenPois0n RC 6.1 for mac or windows to perform a jailbreak. Just go to http://greenpois0n.com/ and you’ll find the download section, if you can’t access the site, just google “Download GreenPois0n 6.1″ and you should be able to find a mirror download link in a few minutes. This is an untethered jailbreak, which means you don’t have to worry about connecting your phone to your computer if you accidentally turn off your phone or just simply run out of battery.
Attention: If you’re a first time jailbreaker, please google jailbreaking first to properly understand what it is and what it does and how it helps you (or not) before going through the jailbreaking process.