How to unlock iPhone 3G/3Gs 3.1.2 Firmware with Ultrasn0w

October 15th, 2009 by Giridhar | Posted under Tips & Tools.

iphone-software1In order to unlock iPhone 3G and 3Gs 3.1.2 you must use Pwnagetool 3.1.4 to jailbreak and have to use Ultrasn0w 0.9

to unlock 3.1.2. You are unlucky if you have already upgraded to firmware 3.1.2 without preserving your baseband.
Only iPhone3G & 3GS 3.1.2 users with base band 04.26.08 can use Ultrasn0w to unlock iPhone to use it with any carrier. It is explained below how to unlock iPhone 3.1.2.

How to Unlock iPhone 3G 3.1.2 & iPhone 3GS 3.1.2

1. Download PwnageTool 3.1.4 and follow iPhone 3.1.2 Jailbreak guide (mentioned in earlier post).

2. After the successful jailbreak of your iPhone 3G/3GS 3.1.2 go to Cydia and click on Manage Tab.

3. Select Sources and Click on Edit- Add to add following URL source

http://repo666.ultrasn0w.com

And click on Add Source

4. After Cydia completes adding of source search for “ultrasn0w” in Cydia and install Ultrasn0w which will automatically unlock your iPhone 3.1.2 OS.

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Comments

One Response to “How to unlock iPhone 3G/3Gs 3.1.2 Firmware with Ultrasn0w”
  1. unlock iphone says:
    October 25, 2009 at 4:58 am

    The most recent development in the modern technological field is the introduction of the 3g iphone which has revolutionized the whole concept of mobile phones.

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