If you want a tethered jailbreak of iOS 5.1.1 with the latest iPhone Dev Team’s Redsn0w tool then follow the guide written below to do that.
Note: This guide will only work to jailbreak iOS 5.1.1 over A4-devices including iPhone 4, iPhone 3GS, original iPad 1, iPod Touch 4G and iPod Touch 3G, so it does not support iPhone 4S, iPad 3 and iPad 2.
Jailbreak iOS 5.1.1 with Redsn0w
Requirements:
- Download redsn0w 0.9.10b8b for Mac / Windows
- Download iOS 5.1 for your iDevice
- Download latest iTunes
- Upgrade your iDevice to iOS 5.1.1 by grabbing over-the-air update (OTA) by navigating through “Settings” > “General” > “Software Update” on device, or download iOS 5.1.1 via iTunes direct link
- Back up your iDevice through iTunes, just as a precaution
Step-1
Open Redsn0w, click “Extras”
Step-2
Click on “Select IPSW” and browse for your downloaded iOS 5.1 IPSW file from your computer, in a while Redsn0w will recognize your iOS 5.1 file
Step-3
Go back to RedSn0w Main screen and click on “Jailbreak” button
Step-4
Now, follow the on screen instructions to put your iDevice into DFU Mode
Step-5
When your iDevice will get enter to DFU mode, RedSn0w will start identifying and build process and also it will load jailbreak data
Step-6
Click on “Install Cydia” check box to select it, and click next button to initiate jailbreak
Step-7
On completion of process, your iDevice will reboot
Step-8
Now, again put your iDevice into DFU mode
Step-9
From main screen of RedSn0w, click “Extras” > “Just Boot” for a tethered boot of your iDevice and then you will find Cydia icon on springboard