Before starting the actual untethered jailbreak process for 5.1.1 iOS on iPhone 4S, with Reds0w (Cydia) via a Windows PC, it is advised you back up your iPhone SHSH Blobs (there is a tutorial for that on our website). SHSH Blobs are needed if you want to unlock your devices later on, and since upgrading to iOS 5.1.1 means updating baseband, SHSH Blobs could be impacted.
Step 1
Go your Windows PC’s desktop and create a folder you will name Pwnage. Download the most recent version of Redsn0w, download 5.1.1 and place all these files in the Pwnage folder on your desktop. Double click on the Redsn0w zipe file and extract it.
Step 2
This step is a must only if you haven’t already upgraded to iOS 5.1.1 and teaches you how to download and install the firmware. Connect your iPhone to the computer, launch iTunes, find and select your device in the list on the left, press Shift on your keyboard and then click Restore button. In the Pwnage folder on your desktop, select the 5.1.1 firmware ipsw file, click Choose and iTunes will update your device to this iOS version.
Step 3
Again in the Pwnage folder, you have to launch the Redsn0w app file (right click on .exe, select Run as Administrator in the menu that opens). Click the Jailbreak button when Redsn0w launches, which will then install Cydia for you.
Step 4
Lay back and let Redsn0w and the Rocky Racoon work their magic. It will go through three stages, which don’t require any action from you. The Windows jailbreak wizard will run by itself through preparing, processing and finishing up. Once it has completed the process, Redsn0w will let you know if it was a success, while Windows will display the following message: “Jailbreak was successfully installed. Please leave device alone until it reboots on its own. After Cydia appears, please wait for one final respring to happen”.
