Update to iOS 5.1.1 and Preserve baseband with Sn0wbreeze 2.9.5

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”

How To Preserve iPhone 4, iPhone 3GS Baseband On iOS 5 With Sn0wBreeze

How To Preserve iPhone 4, iPhone 3GS Baseband On iOS 5 With Sn0wBreeze

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.

How To Preserve iPhone 4, iPhone 3GS Baseband On iOS 5 With Sn0wBreeze

Step 4: Sn0wBreeze will identify the device and firmware, verify that they are correct then Click the blue arrow on the right corner.

How To Preserve iPhone 4, iPhone 3GS Baseband On iOS 5 With Sn0wBreeze

Step 5: Now you have to select the fourth Choice “Baseband Preservation Mode” you will receive a reminder about jailbreaking then Click “Yes”.

How To Preserve iPhone 4, iPhone 3GS Baseband On iOS 5 With Sn0wBreeze

How To Preserve iPhone 4, iPhone 3GS Baseband On iOS 5 With Sn0wBreeze

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

How To Preserve iPhone 4, iPhone 3GS Baseband On iOS 5 With Sn0wBreeze

How To Preserve iPhone 4, iPhone 3GS Baseband On iOS 5 With Sn0wBreeze

Step 7: Once completed, Sn0wBreeze will place the custom created firmware on your desktop then click ‘OK’.

How To Preserve iPhone 4, iPhone 3GS Baseband On iOS 5 With Sn0wBreeze

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

How To Preserve iPhone 4, iPhone 3GS Baseband On iOS 5 With Sn0wBreeze

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”.

iTunes

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:

Important Links

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12 Responses to “Update to iOS 5.1.1 and Preserve baseband with Sn0wbreeze 2.9.5”

  1. bob says:

    please how do i activate my iphone after upgrading with sn0wbreeze.. i dont have the carrier sim, only the gevey chip…

  2. maukphyo says:

    jailbreak yr idevice using jailbreak tools – redsnow or others

  3. okan says:

    Hi,
    I’m getting error “3194” and cannot use my iphone now :(
    what can I do ?
    thanks

  4. okan says:

    ok find some info and started tinyumbrella and started TSS server, now I’m getting error 10…

  5. okan says:

    upgraded itunes and tried again now error 11 :)

  6. Vyttux says:

    Hello, mine situation is a bit different: i have an iphone 4 running already jailbroken (with redsnow) iOS 5.0.1 and my modem baseband was also preserved to keep it 04.10.01. After trying to install and delete various apps from cydia it started to crash and lag, so i just want to update the whole software. So if I want to install 5.1.1 and to preserve the current baseband I have to use the steps written in this article? Or in my case I have to do some things different?thanks!

  7. leon says:

    i have the same problem, i don’t have the sim card to unlock, only gevey sim. i’m stuck here i’ve upgrade my iphone to ios 5.1.1. i need help

  8. Ravi says:

    What i did was just buy a prepaid AT&T sim card for like $25. Then i just cut it so it would fit then I used that to activate

  9. Ravi says:

    Does anyone know if this works on iOS 5.1.1 with the Gevey????

  10. Vikneshwaren says:

    Check out Step 3. It should be ” 5.1.1 ” and not ” 5.0.1 “. Please correct it :)

  11. Tomas says:

    Will I be able to jailbreak and unlock 3GS 5.1.1 with new bootrom?

  12. I truly appreciate this post. I’ve been searching everywhere for this! Thank goodness I identified it on Bing. You have created my day! Thx once more!
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