How to Update to iOS 5.1.1 and Preserve baseband with Sn0wbreeze 2.9.5 to be able to Unlock your iPhone 4, 3GS with Ultrasn0w 1.2.7 or Gevey Unlock.
Note: You have to know that this steps is not a jailbreak it’s only a way to preserve your baseband if you rely the unlock, in order to install UltraSn0w from Cydia to unlock your device .
How to Update to iOS 5.1.1 and Preserve baseband with Sn0wbreeze 2.9.5 :
Step 1: Download sn0wbreeze v2.9.5
Step 2: Run Sn0wBreeze by double clicking of it then click ‘OK’ and follow it by the “Blue Arrow”
Step 3: Click on the “Blue Box” and choose your iOS 5.0.1 firmware file and Make sure that you have choose the correct firmware file for your device.
Step 4: Sn0wBreeze will identify the device and firmware, verify that they are correct then Click the blue arrow on the right corner.
Step 5: Now you have to select the fourth Choice “Baseband Preservation Mode” you will receive a reminder about jailbreaking then Click “Yes”.
Step 6: Now Sn0wBreeze will start building your firmware and will give you an option to play PacMan, or stick to the spinner.
Recommend: stick to the spinner
Step 7: Once completed, Sn0wBreeze will place the custom created firmware on your desktop then click ‘OK’.
Step 8: Now Snowbreez will inform you by the screen below to Put your iPhone into DFU mode follow the steps below it will help you to put your iPhone into DFU mode
- Hold down power button and home button both at the same time for 10 seconds
- After the 10 seconds release the power button and still pressing on the home button for another 10 seconds
Step 9: Click ‘Start’ on the DFU Pwner screen in Sn0wBreeze.
Step 10: Sn0wBreeze will run ‘iReb’ and place your iPhone into DFU Mode. You will get a confirmation screen that the phone is in DFU state, Click “OK” and close out of Sn0wBreeze completely.
Step 11: Open iTunes, it should recognize that your device is in recovery mode click “OK”.
Step 12: Hold ‘Shift’ on your keyboard, and click ‘Restore’ on iTunes and Select the created Sn0wBreeze custom firmware from your desktop.
Step 13: Your iPhone should restore completely, with your unlockable baseband.
Here’s How to preserve your baseband using Snowbreez in action:
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