Jailbreak your iPhone

Unlock iPhone 4 iOS 4.0, 4.0.1 With Ultrasn0w


As you know Apple dropped iOS 4.0.1 for iPhone 3G, 3GS and iPhone 4 in response to wrong signal calculation. This is a minor update and no major changes in baseband update and jailbreak protection in comparison with iOS 4.0 We already posted a complete how to guide on how to Jailbreak iOS 4.0 / 4.0.1 iPhone 4 with Jailbreakme. Following are the instructions to unlock iPhone 4 with iOS 4.0 / 4.0.1 with Ultrasn0w.


Instructions to install ultrasn0w using cydia

Step One : Press to launch Cydia Installer from your Springboard.

Step Two : Press to select the Manage tab at the bottom of the screen.

Step Three : Press to select the large Sources button

Step Four : Press the Edit button at the top right of the screen.

Step Five  : Press the Add button at the top left of the screen.

Step Six : Enter http://repo666.ultrasn0w.com as the source url and press the Add Source button.

Note:ultrasn0w is spelled with a zero, not the letter “o”.

Step Seven : Once the source has been added press the large Return to Cydia button.

Step Eight : Press the Done button at the top right of the screen.

Step Nine : Press to select http://repo666.ultrasn0w.com/ from the list of user entered sources.

Step Ten : Press to select ultrasn0w from the list of packages.

Step Eleven : Press the Install button at the top right of the screen.

Step Twelve : Press the Confirm button at the top right of the screen.

Step Thirteen : After installation completes successfully press the reboot.

Step Fourteen : Now press the Home button then power off and power on the iPhone. You do this by holding down the power button for 3 seconds then moving the power slider that appears to the right. Press the power button again to turn on the phone.

Step Fifteen : You should now be able to insert the SIM of your choice!


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Comments ( 3 )

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  1. Jerry Lee October 15, 2010 Reply

    OK, I did this but my iphone 3g still won’t allow unlock to use another carrier. My sim works fine on simple mobile in another phone, my base band is 5.14.02 if that makes a difference, and also I have downgraded to 4.0.1, any suggestions that might help unlock Iphone 3g Thanks in advance for all your help

  2. sujan August 31, 2010 Reply

    My I phone 3GS with 4.01 firmware locked in emergency mode. Any Idea what to do?

  3. jason August 20, 2010 Reply

    it only wants to let me get at&t and t-mobile how do i get boost or verizon

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