And the most important thing.
Don’t forget to Backup your Data on your iDevice with one click. And you can restore the data you have backed up after you are done with the Jailbreaking Procedure.
Below is a complete guide on how to Jailbreak Untethered and Preserve your baseband via Sn0wbreeze 2.7.
Steps to Follow:
Download Sn0wbreeze 2.7
Download iOS 4.3.3.
Download iOS 4.2.8.
Once downloaded, Now open Sn0wbreeze and proceed next.
Now proceed next and browse for the firmware which will be iOS 4.3.3 / iOS 4.2.8
After you have selected the IPSW it will recognize your iDevice.
When you will proceed next it will show two modes. Select Simple if you want to Jailbreak untethered. If you want to add features like Boot logo Animation, Multi Touch Gestures so go for Expert Mode.
Simple Mode users Skip to Step#5
Now proceed next and choose the General Option.
Now proceed next and check the options you want.
Now proceed next and you will come on the same screen as on Step#4. Now select Build this time.
Now process next and it will start to build the IPSW
Once it is done it will show you a message saying Done.
Now press the OK button to proceed further and put you iDevice into PWNED DFU mode to avoid any kind of errors.
Now follow the steps showing on screen after pressing the OK Button to enter into PWNED DFU Mode
Once done with this proceed next
Open iTunes and iTunes will popup a message that iTunes found a Device in the recovery mode.
Now press Shift+Restore and it will ask you to browse for the Custom IPSW. Locate he IPSW and restore to it.
The restore process will start on your iDevice shortly.
Once it is done it will show you a message and you will Unethered Jailbroken on iOS 4.3.3 / iOS 4.2.8.
If you get any sort of Error while restoring, So you can see the complete list of Errors present here with their solutions.