Alright, before we begin there are some things that you will need to be aware of before continuing. !!! - There is a chance upon doing this that you may brick your iPhone, this has only been tested with the listed three Networks. You must obtain one of these sim-cards at the moment for it to work: T-Mobile Alltel & Verizon ( You can get these through certain CDMA / GSM Capable phones sold by the company.) Also, the process is around ten minutes. But can take up to four hours to register on the new network. - !!! Tutorial: "Video Will Be Posted Within A Couple Days" Before we start you must meet these requirements for the process to work: - Click On Settings - Click On General - Click On About - - > Verify: - - - - - - - > Version: 2.2 (5G77) - - - - - - - > Modem Firmware: 02.28.00 Use the QuickPwn Application to restore your phone to the correct Version & Firmware to make this exploit possible. If you haven't Jailbroken the iPhone yet please go download : QuickPwn 2.2 Once you've installed QuickPwn follow the steps on screen which go like this: - Power Off - Once Powered off hold "Power + Home" for 10 seconds - Then Release Power and continue to hold Home If you successfully hit the correct timing, QuickPwn will compile the IPSW and begin installing to your iPhone. After it has completed slide to the application "Cydia" which will now be one of the Applications installed. - Load Cydia - Update All The Applications (4.4 MB Worth) - After it has installed / updated all the applications it will restart - After it restarts open it again - Remove your AT & T Sim Card and place one of the other carriers cards in the slot. - Once you've done that within the Application "Cydia" Select Manage - Select Edit - Select Add - Type this in exactly: http://apt9.yellowsn0w.com - Select Search - Type in yellowsn0w - Click the Application - Download the file- it's around 64KB so it's not large - Then it will install then restart Now that the application has installed- Power Off the iPhone. After you've powered it down... Turn it back on; give it a few minutes. Indicators: - You will see the "Bars" then "Internet Edge or 3G" then you will see the Network Carrier. After it has successfully done that, then go ahead and open: - Settings - General - About - - > Under Network you will see the new carrier, not AT & T Once you see that, you've successfully unlocked your iPhone 3G to "any" network. In the video, I will be using a "Blackberry 8830 Sim-Card." Hopefully this helps, there should be another launch which will exploit the base band further, to hopefully get it "fully" on a CDMA Network as if it was a Sprint or Verizon only phone. With no GSM Capabilities.