Guide: Unlock iPhone 3GS using Ultrasn0w

This short tutorial will show you how to unlock your iPhone 3GS using UltraSn0w. Unlocking your iPhone 3GS will allow you to use your it with any cellphone carrier in the US and in the world, assuming they use SIM cards.

Before starting, make sure this is the latest tutorial on unlocking the iPhone 3GS by visiting this page.

Unlock iPhone 3GS Guide:

First you have to jailbreak your iPhone 3GS. Read my RedSn0w tutorial on how to do that first. It should take about 10 minutes and it is a necessary step to be able to unlock your iPhone.

After jailbreaking your iPhone 3GS, follow these simple steps to install UltraSn0w:

  • Launch Cydia.
  • Add the following source to Cydia repo666.ultrasn0w.com (note there is a “0? in sn0w, not an “o”).
  • After installing this source in Cydia, search for “UltraSn0w”.
  • Install UltraSn0w and reboot your iPhone.

That’s it :)

Written by

Computer Science Student from University of Cincinnati turned writer with my first iPhone. I like to travel, make friends with tech minded folks on internet. I write on my 13" MacBook Pro Retina and iPad Air Cellular. Black iPhone 5S is my sidekick.