Sn0wbreeze 2.9.5 can jailbreak iOS 5.1.1 untethered on iPhone 4, iPhone 3GS, iPad 1 and iPod Touch 4G, 3G. These are the steps to jailbreak iOS 5.1.1 untethered with Sn0wbreeze 2.9.5 on your iPhone 4, 3GS, iPad 1 and iPod Touch 4G, 3G.
Sn0wbreeze, just like PwnageTool, creates custom firmware using iOS 5.1.1 to jailbreak iPhone, iPad and iPod Touch. Custom firmware not only jailbreaks your iDevice, it also preserves your iPhone baseband to its current version which lets iPhone unlockers to use UltraSn0w or Gevey SIM. So, jailbreak with custom firmware is recommended for those iPhone users who depend on UltraSn0w or Gevey SIM unlock.
iPad/iPod Touch users: Absinthe is the easier solution for you guys:
How to: Jailbreak iPad 3, iPad 2, iPad 5.1.1 with Absinthe 2
How to: Jailbreak iPod Touch 4G, 3G 5.1.1 with Absinthe 2
Sn0wbreeze 2.9.5 does NOT support iPhone 4S, New iPad 3, and iPad 2.
How to Jailbreak iOS 5.1.1 with Sn0wbreeze 2.9.5
Extract the downloaded sn0wbreeze-v2.9.5.zip and execute the sn0wbreeze-v2.9.5.exe;
Click OK button;
Now click on the Next Arrow button.
Click Browse for an IPSW;
Browse and select the downloaded iOS 5.1.1 IPSW file for your iDevice;
Sn0wbreeze will verify and recognize the selected IPSW, click the Arrow to continue;
Now select Expert Mode;
Select General and hit Next Arrow button;
Check mark Activate the iPhone [Hactivate] only if you do NOT have the official carrier SIM card;
Click Next and then again hit next;
Select Build IPSW and hit the Next Arrow;
Sn0wbreeze will start building the custom iOS 5.1.1. You can either choose to play PacMan during the building process or stick with the spinner;
Upon completion, Done! message will appear on Sn0wbreeze and a custom IPSW will be created on your desktop.
By clicking the Ok button, Sn0wbreeze will instruct you to put your iPhone, iPad or iPad Touch into Pwned DFU Mode.
*This step is important*
Click the Start button and follow the on screen Sn0wBreeze instructions *important* to put your iPhone, iPad or iPod Touch into Pwned DFU state NOT the simple DFU mode.
- Hold Power + Home buttons for 10 seconds
- Now release the Power button but keep holding the Home button for 10-30 more seconds
Sn0wBreeze will prompt you once you’re into Pwned DFU state. Your device should now be in Pwned DFU mode.
- Now open iTunes, Hold down the Shift/Option key and hit the Restore button.
- Browse and select the custom firmware that we just created, from the desktop.
iTunes will start restoring custom iOS 5.1.1 on your iPhone/iPad/iPod Touch. Once done, your iPhone, iPad or iPod Touch will be running iOS 5.1.1 jailbroken untethered.