As you know that iPhone dev-team has released PwnageTool 4.3 to bring untethered jailbreak for iOS 4.3.1. PwnageTool 4.3 untethered jailbreak is based on i0n1c’s untethered exploit. For Redsn0w 0.9.6rc9 users please check this tutorial.
Importatnt: Before you start please learn how to prepare for the jailbreak and how to backup apps here Step 1: Download PwnageTool 4.3 for Mac. Step 2: Download iOS 4.3.1. Move PwnageTool and iOS 4.3.1 to desktop Step 3: Start PwnageTool in “Expert mode” and then select your device: Step 4: Browse for iOS 4.3.1 firmware for your device as shown in the screenshot below: Step 5: Now select “Build” to start creating custom 4.3.1 firmware file: Step 6: PwnageTool will now create the custom .ipsw file for your iPhone 4, 3GS, iPad or iPod touch 4G, 3G which will be jailbroken. Step 7: Now follow the following steps to enter DFU mode using PwnageTool:
Note: For who is relying on unlock. Ultrasn0w 1.2 is broken on iOS 4.3.1. Wait for the Dev-Team to push new version of Ultrasn0w to unlock your iPhone (This is not new unlock, dev-team trying now to make ultrasn0w work on iOS 4.3.1 to unlock the already unlockable basebands ( 01.59.00 / 04.26.08 / 05.11.07 / 05.12.01 / 05.13.04 / 06.15.00))
- Hold Power and Home buttons for 10 seconds
- Now release the Power button but continue holding the Home button for 10 more seconds
- You device should now be in DFU mode
Step 9: iTunes will now restore the firmware on your iPhone. This can also take up to 10 minutes. Once done you will be rebooted into jailbroken iOS 4.3.1!
- iPhone 4, 3GS
- iPod Touch 4G, 3G
- iPad 1 (Unfortunately iPad 2 still not supported)
- Apple TV 2G.
iOS 4.3.1 firmware DIRECT links below: