ALL IPHONE : iPhone 3G UNLOCK

ALL IPHONE : iPhone 3G UNLOCK
These are instructions on how to software unlock the iPhone 3G for use with any GSM cellphone carrier.

Before you can follow these instructions you must have a jailbroken iPhone and you must be on the 02.28.00 baseband(modem firmware). This means that you must be running the 2.2 firmware. If you used PwnageTool to update to 2.2 from 2.1 you will have to rejailbreak using a QuickPwn jailbreak tutorial for the time being.

ALL IPHONE : iPhone 3G UNLOCK
Step One
Press to launch Cydia Installer from your SpringBoard.


Step Two
Press to select the Manage tab at the bottom of the screen

Step Three


Press to select the large Sources button

Step Four
Press the Edit button at the top right of the screen

Step Five
Press the Add button at the top left of the screen

Step Six
Enter "http://apt9.yellowsn0w.com" as the source url and press the Add Source button

Step Seven
Once the source has been added press the large Return to Cydia button

Step Eight
Press the Done button at the top right of the screen

Step Nine
Press to select apt9.yellowsn0w.com from the list of user entered sources

Step Ten
Press to select yellowsn0w from the list of packages

Step Eleven
Press the Install button at the top right of the screen

Step Twelve
Press the Confirm button at the top right of the screen

Step Thirteen
After installation completes successfully press the large Return to Cydia button

Step Fourteen
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


Step Fifteen
You should now be able to insert the SIM of your choice!

***HINTS: It seems that getting your iPhone to pick up your new carrier can be helped by turning off 3G and perhaps toggling the Airplane Mode switch on and off. If you are still having problems try removing and reinserting the SIM or booting with the new SIM already inside.

***NOTE: There is a known issue with SIM cards that have STK (SIM Toolkit) application menus. These menus are usually items such as “top up” “get credit” “lotto numbers” etc. These menu items confuse the application sometimes. Removing and reinserting the SIM once after reboot (give it about 10 secs after you see the slide to unlock widget) fixes this issue. The Dev-Team is working on a better fix.

***THANKS: A big thank you to all the members of the iPhone Dev-Team for all their hard work! It is much appreciated by all.

***UPDATES: The Dev-Team has made the following updates...
1. It uses a much longer delay to let your SIM card initialize. If you have problems , try this one and wait a full minute after you see homescreen, then reinsert sim card. We need both success and failure reports to tune this across the world, so please be patient (but please also report result!)
2. If you are in the U.S. and are trying this with T-Mobile, you must turn off the 3G switch in Settings. Also if you are good with the command line, you can make it much easier by adding the line -q right after the /usr/bin/yellowsn0w line in /System/Library/LaunchDaemons/org.iphone-dev.yellowsn0w.plist (that’s and advanced tip, hopefully someone will make a boosprefs type of tool for it)
3. No PIN support yet. Remember how we said this was beta? Well we’re still working out the flow for SIMs with PINs enabled. Please disable any PIN you may have on that SIM before trying yellowsn0w, for now..