[GUIDE] Sn0wbreeze 2.4b1 Released to Jailbreak iOS 4.3.1.

iOS 4.3.1 was already jailbroken with PwnageTool bundles on iPhone 4/3GS, iPad, iPod Touch. This tethered jailbreak is only available for Mac users and Windows users can’t get benefit from it. However, recently released Sn0wbreeze 2.4 beta 1 brings tethered 4.3.1 jailbreak to Windows users.

Before proceeding to jailbreak iPhone 4/3GS on iOS 4.3.1, read the following precautions

Required Tools:

iTunes 10.2.1 for Windows
iOS 4.3.1 for iPhone 4/3GS
Sn0wbreeze 2.4

1: Execute Sn0wbreeze and proceed by clicking Forward button in bottom right corner.

2: Select the corresponding 4.3.1 firmware for your iPhone.

3: The selected IPSW file will be identified and verified by Sn0wbreeze.

4: In next screen, chose “baseband preservation mode” if you rely on unlock. Otherwise select “Simple” or Expert Mode according to your requirements.

5: Sn0wbreeze will start creating custom firmware and will display “Done” when the firmware has been cooked.

6: In next step, you will follow the onscreen instruction to get iPhone into DFU mode.

7: When you are in DFU mode, Sn0wbreeze will display a message.

8: Now launch iTunes and select your iPhone from the left sidebar. Now hold “Shift” key and click on “Restore”. Select the custom 4.3.1 firmware just created by Sn0wbreeze.

9: iTunes will start restoring your iPhone to custom iOS 4.3.1 and all you have to do is wait. Don’t unplug your iPhone or close iTunes in this process.

Booting into Jailbroken State using iBooty:

As this jailbreak is tethered, you will have to connect with PC every time it has to be reboot. During the process of custom 4.3.1 firmware, Sn0wbreeze will create iBooty folder on desktop.

Execute iBooty and chose your iPhone from drop down menu.

Click “Start” and follow the steps to get iPhone into DFU mode. After reboot, your iPhone will be in jailbroken state.