Unlock for 05.12.01 Baseband on iPhone 3.1.3 Release

First install Cydia and Jailbrak the Iphone for Jailbreak you can search from Google.

Now this is the process for Unlock for 05.12.01 Baseband on iPhone 3.0, 3.0.1, 3.1.3 Releases
1 : Press to launch Cydia Installer from your Springboard.
2 : Press to select the Manage tab at the bottom of the screen.
3 : Press to select the large Sources button
4 : Press the Edit button at the top right of the screen.
5 : Press the Add button at the top left of the screen.
6 : Enter http://repo666.ultrasn0w.com as the source url and press the Add Source button. Note:ultrasn0w is spelled with a zero, not the letter “o”.
7 : Once the source has been added press the large Return to Cydia button.
8 : Press the Done button at the top right of the screen.
9 : Press to select http://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 Return to Cydia button.
14 : Now press the Home button then power off and power on the iPhone. You do this by holding down the power button for 3 seconds then moving the power slider that appears to the right. Press the power button again to turn on the phone.
15 : You should now be able to insert the SIM of your choice!


If you got it Please dont forget to say thanks me