iH8sn0w updated his windows Jailbreak tool,Sn0wBreeze2.2 to enjoy an untethered jailbreak for iOS 4.3.1.
Here in this post you will see a step by step to jailbreak your Device!
This version of Sn0wbreeze in all cases keep your baseband, so you still can unlock your iPhone after using Ultrasn0w, but be careful, Ultrasn0w is not yet compatible with iOs 4.3.1. The Dev Team will release soon an update.
You should have:
Step 1: Launch Sn0wbreeze and click OK.
Step 2: Browse your 4.3.1 IPSW you download before.
Step 3: Select your bootrom choice. If you do not know your bootrom, select “Detect it for me.”
Step 4: Select “Expert Mode.”
Step 5: Select “General”
Step 6: I recommend to install SSH, and if you are on an official carrier, you don’t need to worry about activating, so don’t check it!
Step 7: In the custom packages option, if you want you can pre-install Cydia packages to be built into your custom IPSW file.
Step 8: Once you have fully customized your IPSW, click the “Build IPSW” option.
Step 9: Once Sn0wBreeze has built your IPSW, you will now have the custom firmware file needed to restore and jailbreak your iPhone.
Step 10: Follow the instructions for putting your iPhone into DFU mode.
Once your iPhone successfully comes out of DFU mode, you should now have an untethered jailbreak on iOS 4.3.1!
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