How To unlock Iphone 3g/3gs os 4.1 / 4.2.1 using ultrasn0w

Hi,
Just Follow the Instruction to unlock your iphone3G/3GS OS 4.1 / 4.2.1
Note : your iphone must be a jail broken.

• Start Cydia from your springboard.
• Touch on the “Manage” tab, located on the bottom of the screen.

• Now touch on “Sources”.
• Touch on “Edit” and then on “Add”. In the box shown, you must type this url: http://repo666.ultrasn0w.com and the touch on “Add Source”, like bellow:

• After Cydia has finished to update the sources, search for “ultrasn0w 1.2” in the Cydia screen. By installing this application, the unlocking process will begin.
• After Ultrasn0w has unlocked the device, simply restart it and you’re done.

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