How to Jailbreak iOS 5.1.1 For iPhone 4S, iPhone 4, iPhone 3GS Users Using Redsn0w [Untethered]

iPhone Dev team has released Redsn0w that includes support for untethered iOS 5.1.1 for iPhone, iPad and iPod touch. It includes Rocky Racoon and untethered iOS 5.1.1 jailbreak developed by pod2g and planetbeing that was used in Absinthe 2.0.x jailbreak.

In this article, we will take you through the step-by-step procedure to jailbreak your iPhone on iOS 5.1.1 using Redsn0w for both Mac and Windows users.

Here are some important points to note before you proceed.

This tutorial is meant for iPhone users.
Redsn0w 0.9.12b2 supports untethered jailbreak.
Redsn0w 0.9.12b2 supports iPhone 4S, iPhone 4, iPhone 3GS running on iOS 5.1.1.
Please ensure your iPhone is on iOS 5.1.1 (Settings --> General --> About --> Version should be 5.1.1) before proceeding.
Please note that jailbreaking your iPhone may void your warranty and hence proceed with caution and at your own risk.
Please do not forget to backup your iPhone before you proceed.
Please ensure you are running latest version of iTunes.
Important: iPhone 4, iPhone 3GS users who have a lot of media on your device, then you can jailbreak your iOS device by putting it in DFU mode

Step 1: Download the latest version of Redsn0w from this link and save it in a folder named "Redsn0w" on your desktop. [url=http://www.iphonehacks.com/download-redsn0w]

Step 2: Double click the Redsn0w zip file and extract the application to the Redsn0w folder and then launch the Redsn0w application.

Windows users should run Redsn0w as ‘Administrator’ (right-click on the Redsn0w exe and select 'Run as an Administrator').

Step 3: After launching Redsn0w, click on the Jailbreak button.

Step 4: Redsn0w will start the jailbreak process and go through the following three steps:

1. Preparing

2. Processing

3. Finishing up

Step 5: Once the three steps are completed, Redsn0w will inform you that the jailbreak was successfully installed. But please wait, leave your device alone. Your iPhone will reboot on its own. After it has rebooted, wait for it respring again.

After the respring, your iPhone will be successfully jailbroken and you should be able to find the Cydia icon on the Home screen (please note that the Cydia icon may not be on the first page, so don't assume that your iPhone hasn't been successfully jailbroken, use Spotlight to search for it).

Just In Case: If you cant read very well or prefer a follow along video here is youtube instructional video I found that is very good to assist you.