How to Unlock the iPhone 4, 3GS, 3G Using UltraSn0w

How to Unlock the iPhone 4, 3GS, 3G using UltraSn0w

Following instructions are use for unlocking iPhone 4, 3GS and 3G. This will work with the iOS 4.2.1 firmware if you are on the 06.15.00 base-band. Before you can follow these instructions you must have a jailbroken iPhone and you must be on the 04.26.08, 05.11.07, 05.12.01, 05.13.04, 06.15.00, or 01.59 base-band (modem firmware).

1. Lunch Cydia from your spring board
2. Press the Manage tab at the bottom of the Cydia Screen.
3. Select Source
4. If the ultrasn0w repo is not present press the Edit button at the top right of the screen. Otherwise, skip,
5. Press the Add tab
6. Enter http://repo666.ultrasn0w.com/ as the source url and press the Add Source button.
7. Press Return Cydia Button
8. Press the Done Button
9. Press to select repo666.ultrasn0w.com from the list of user entered sources.
10. Press to select ultrasn0w from the list of packages.
11. Press the Install button at the top right of the screen.
12. Press the Confirm button at the top right of the screen.
13. After installation completes successfully press the large Restart Springboard button.
14. You should now be able to insert the SIM of your choice!