These are instructions on how to unlock the iPhone 4, iPhone 3GS, and iPhone 3G for use with any GSM cellphone carrier using UltraSn0w.
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 baseband(modem firmware) for 3G/3GS or 01.59.00 for iPhone 4.
If you are on T-Mobile remember to turn off 3G before starting...
Step 1: Launch cydia
Step 2: Press to select the Manage tab at the bottom of the screen.
Step 3: Press to select the large Sources button
Step 4: If the ultrasn0w repo is not present press the Edit button at the top right of the screen. Otherwise, skip to Step 9
Step 5: Press the Add button at the top left of the screen.
Step 6: Enter http://repo666.ultrasn0w.com/ as the source url and press the Add Source button.
Step 7: Once the source has been added press the large Return to Cydia button.
Step 8: Press the Done button at the top right of the screen.
Step 9: Press to select repo666.ultrasn0w.com from the list of user entered sources.
Step 10: Press to select ultrasn0w from the list of packages
Step 11: Press the Install button at the top right of the screen.
Step 12: Press the Confirm button at the top right of the screen.
Step 13: After installation completes successfully press the large Return to Cydia button.
Step 14: Power off/on the iPhone.
That's it! Now you will be able to use any sim card with your iPhone.
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 baseband(modem firmware) for 3G/3GS or 01.59.00 for iPhone 4.
If you are on T-Mobile remember to turn off 3G before starting...
Step 1: Launch cydia
Step 2: Press to select the Manage tab at the bottom of the screen.
Step 3: Press to select the large Sources button
Step 4: If the ultrasn0w repo is not present press the Edit button at the top right of the screen. Otherwise, skip to Step 9
Step 5: Press the Add button at the top left of the screen.
Step 6: Enter http://repo666.ultrasn0w.com/ as the source url and press the Add Source button.
Step 7: Once the source has been added press the large Return to Cydia button.
Step 8: Press the Done button at the top right of the screen.
Step 9: Press to select repo666.ultrasn0w.com from the list of user entered sources.
Step 10: Press to select ultrasn0w from the list of packages
Step 11: Press the Install button at the top right of the screen.
Step 12: Press the Confirm button at the top right of the screen.
Step 13: After installation completes successfully press the large Return to Cydia button.
Step 14: Power off/on the iPhone.
That's it! Now you will be able to use any sim card with your iPhone.