This short tutorial will show you how to unlock your iPhone 3GS using UltraSn0w. Unlocking your iPhone 3GS will allow you to use your iphone 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:
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.