Green Poison: iPad 4.2.1 Jailbreak with Greenpois0n RC5-2 Untethered (Mac Guide)

iPad 4.2.1 Jailbreak Untethered is now possible thanks to Greenpois0n RC5-2. The trouble is that for now the tool is only available for Mac. Finally!
As we told you the other day, GreenPois0n, the tool that allows you to Jailbreak Untethered to devices iOS 4.2.1 directly, has finally seen the light. In this article we offer a complete guide on how to use it.
Warnings:

• This guide to Jailbreak iPad 4.2.1 Untethered for now only available for users of MAC.
• It is highly recommended to restore the iPad before continuing the process.
• Although a fairly simple process is not recommended for novice or inexperienced. Jailbreak make changes to the operating system, so before you follow this guide is highly recommended that a backup so that in case something goes wrong, you can restore and return to normal.
• We are not responsible for any damage that may occur to your device after you follow this guide.

Requirements:

• iPad 4.2.1 IOS.
• Greenpois0n RC5-2 | Official Website | Download 1

Untethered iPad 4.2.1 Jailbreak Guide:
This guide is very simple. All you need is to have your iPad with iOS updated to version 4.2.1 and the tool Greenpois0n.

1. iPad Connects to your computer, run the tool Greenpois0n and click on the "Jailbreak." Simple, right?
2. Then put the iPad DFU mode by following the steps that the tool Greenpois0n you will be showing:

• Press the Power button for 3 seconds.
• Press Home and Power / lock (the top button) simultaneously for 10 seconds.
• Release the power button / lock and hold Home until no countdown.

3. Greenpois0n conducted a series of tasks and, upon termination, you will see a new icon in your iPad: "Loader".
4. Run the application loader . Now it will install Cydia. Note: this step fails sometimes for the server overload problems. To fix this you can follow the steps listed here (thanks for the contribution submarine!)
Once you have installed Cydia, restart your iPad and ...
Tachan! You have your iPad Untethered Jailbreak !Note: This version of Greenpois0n only available for Mac, but the developers have said that Linux and Windows versions are coming. The version for Windows is available Greenpois0n over this weekend .
Video iPad 4.2.1 Jailbreak with Greenpois0n Untethered:

Updated:Apparently some users are experiencing a problem with this version Greenpois0n RC5 which does not allow the Untethered Jailbreak correctly. Being a release candidate and not a final version of these failures are completely normal. If you encounter any of the failures then better wait till Greenpois0n RC6:

• Unable to find gBdevList
• Unable to find fs_mount
• Unable to find fs_unmount
• Unable to find fs_load_file

Update 2:The Chronic Dev Team has removed the link to download Greenpois0n. Are probably resolving errors and soon launched Greenpois0n RC6. We will keep you posted!
Update 3:Greenpois0n RC5-2 is now available for download from this link.
Update 4:Greenpois0n RC5-2 is now available for Windows. You can follow the tutorial we have prepared the following link:
IPad 4.2.1 Jailbreak with Greenpois0n Untethered RC5-2 for Windows
Update 5:Greenpois0n has been updated to version RC6. All info here.