How to Unlock iPhone 3,3GS,4 Using Ultrasn0w

If you think you are not capable of Doing this on your own, please do not try this.
We are not responsible of any damage occurs by doing this!

In This Tutorial You can Learn How to Unlock Your iPhone 3,3GS,4 for Use with any GSM Phone Carrier Using Ultrasn0w.
This will work with iOS 4.2.1 firmware if you are on baseband 06.15.00.

Your Phone Should Be  : Jailbroken, must be on the 04.26.08, 05.11.07, 05.12.01, 05.13.04, 06.15.00, or 01.59 Baseband (Modem firmware)

To Check your firmware follow these steps:

Settings >> General >> About >> Scroll down Until you find "Modem Firmware"

Image of a iPhone Menu

If you are Using T-Mobile Turn off the 3G Before Starting....

These are the Steps to Unlock Your Phone:

Step 1 : Open Cydia (You will Get this Software after you Jailbreak your Device)

Step 2 : Select Manage Tab at the Bottom of the Screen

Step 3 : Select the Sources Button

Step 4 : If you can't See "Ultrasn0w repo" on your Screen press the Edit button on your top right corner, If you have "Ultrasn0w repo" Already on your screen, Skip to Step 9.

Step 5 : Press the Add Button on your top left corner

Step 6 : You will See a small Window asking you to type a URL, in that Type

 "http://repo666.ultrasn0w.com/ " and Press the Add Source Button

Step 7 : Once the Process Completed You will see a button called "Return to Cydia" at the Bottom of your screen, Press that

Step 8 : Press the Done button on your top right corner

Step 9 : Select "repo666.ultrasn0w.com"  from the list of user entered source

Step 10 : Select Ultrasn0w from the List

Step 11 : Press Install Button on the top right corner

Step 12 : Press Confirm on the top right corner

Step 13 : After Installation press "Restart SpringBoard" at the bottom of your screen

Step 14 : Insert Your Sim card, Now you should be able to see your Network on the top of the screen, If you don't see, Restart your phone or go to settings and switch Airplane Mode on and switch it again.

Courtesy: iClassified Website

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