Hey in this tutorial I’ll be showing you how to downgrade the iphone 3g 4.0 OS Firmware to 3.1.2 firmware. I’ll also show you how to unlock your phone. 😉
Download iPhone Firmware:
Ultrasn0w Source for Unlocking iPhone:
(Remember that the “0” in snow, is a zero, not a letter.)
Keep in mind, your doing this on your own risk. I AM NOT Responsible for any mistakes that you do during this process. If you follow what I did correctly, you shouldn’t have any problems. Thanks for watching! .
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