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How to Unlock iOS 5 on iPhone 4,3GS,3G Using UltraSn0w 1.2.4 Tutorial Walkthrough


iPhone-Dev Team has just launched Ultrasnow 1.2.4 in order to unlock iPhone 4, 3GS, 3G with following baseband,

  • iPhone 4 – Baseband 01.59.00
  • iPhone 3G,3GS  – Baseband 04.26.08, 05.11.07, 05.12.01, 05.13.04 and 06.15.00
The update for unltrasnow was released few moments ago by MuscleNerd. being a memeber of iPhone Dev-Team as already reported here.
Note iOS 5 Jailbreak using Rednow or snowbreez is still tethered. Therefore it is recomended that you wait for untethered jailbreak before upgrading to iOS 5. However if you are still willing to go, you can view the full procedure to jailbreak iOS 5 here.
Whats needed
  1. Open Cydia
  2. Goto Manage > Sources
  3. Edit and Add source “repo666.ultrasn0w.com”
  4. After the source has been added. Click on the newly added source and you will find new UltraSnow 1.2.4
  5. Open Ultrasnow 1.2.4 and press the install button
  6. After ultrasn0w is successfully installed restart the iPhone and here you go your carrier has started appearing means its successfully unlocked.
If you want to upgrade your iPhone to iOS 5 it is recomended that you preserve the baseband using SHSH Blobs using tutorial here.
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Comments on this entry are closed.

  • Cell Bull

    Hi, sorry to jump in here,

    it seems like everyone is succeeding at upgrading to ios 5.0 and preserving their baseband at 04.10.01 or earlier. I’ve been trying and keep running into ‘unknown error 11′ in itunes. anyone have this issue or know of a fix?

    ps. i read that this error has something to with an extracted baseband file within the ‘custom’ ispw that im trying to restore to.

    • Anonymous

      Try entering DFU mode before restoring Custom firmware and if still the same error comes use iReb utility by iH8sn0w to enter Pwn DFU mode and it will work

      • Cell Bull

        welli configure another solution for it.I Remove BBFW file in the firmware folder of an unzipped IPSW

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