How do I unlock iPhone 3G using yellowsn0w from Dev Team?

I bought my 3G iPhone without contract from here

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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.

If you are not on firmware version 2.2 and baseband version 02.28.00 then you need to follow the previous post for How do I jailbreak iPhone 3g with v2.2 software.

Now assume you have restored your iPhone with 2.2 software and jailbroken your iPhone. Let's unlock it.


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

Note, Cydia might prompt you to download an updated version of Cydia, go ahead update it.

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. At the time of this post, the latest version of yellowsn0w is 0.96. You may download a newer version when it's available.



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!

Special Note:

If after all these steps, you still gets "No Service" on the iPhone. Try the following step:

* Turn on "Airplane Mode"

* Power off your iPhone

* Power on iPhone

* Turn off "Airplane Mode"

* You will see "Searching..." on the top left corner, after about 10 seconds, you will see signal.

How do I jailbreak iPhone 3G with latest 2.2 version software?

I bought my 3G iPhone without contract from here

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These are instructions on how to jailbreak your 3G iPhone to the 2.1-2.2 iPhone firmware using QuickPwn for Windows. Before beginning make sure you have restored to your desired firmware version using iTunes.



Note*: If you are doing this for the 3G unlock and 2.2 is the latest firmware simply click Restore in iTunes before starting.

Step Zero (Optional)

If your iPhone 3G is right out of sealed box and not activated yet, or your iPhone does not show up as supported SIM in the iTunes, and you can't get to the restore software screen in iTunes, you should put your iPhone into DFU mode:

DFU (Device Firmware Upgrade) mode is not the same as restore mode. DFU mode bypasses the current OS installed and allows you to upgrade or downgrade your OS. If you are getting errors trying to restore in iTunes, DFU mode is very likely for you.

* Attach the phone to the pc

* Turn the phone off

* Hold power and home together for *exactly* 10 seconds

* Release power but keep holding home until the pc beeps as a USB device is recognized.



Step One

Create a folder called Pwnage on your desktop.



Download the following files and place them in the Pwnage folder you just created:

- QuickPwn 2.2

- 2.2.0 (3G): iPhone1,2_2.2_5G77_Restore.ipsw



Extract the QuickPwn22.zip file to the Pwnage folder.





Step Two

Connect your iPhone to the computer and launch iTunes.





Select your iPhone from the list of devices on the left. Now hold down shift and click the Restore button. Restore is preferred as it won't create any wasted space on your iPhone.





Navigate to the Pwnage folder on your desktop and select the 2.2 firmware ipsw. Click the Open button to continue.





Step Three

Once iTunes has finished updating your iPhone to the 2.2 firmware you may launch QuickPwn.exe from the Pwnage folder on your desktop.





Step Four

Make sure you iPhone is connected to the computer and click the blue arrow to continue.





Step Five

Click the Browse button to locate your iPhone firmware.





Step Six

Select the 2.2 firmware ipsw from the Pwnage folder on your desktop then click the Open button.





Step Seven

QuickPwn will check to make sure the ipsw is valid. Click the blue arrow button to continue.





Step Eight

You can now select whether to Add Cydia, Add Installer, or Replace Boot Logos. Select the ones you would like to perform then click the clue arrow button





Step Nine

QuickPwn will now ask you to confirm your iPhone is connected via USB before continuing. Click the blue arrow button to proceed.





Step Ten

QuickPwn will now automatically put your iPhone into recovery mode. Once its in recovery mode you will be prompted to: Hold the Home button for 5 seconds, Hold the Home and Power buttons for 10 seconds, then release the Power button and continuing holding the Home button until your iPhone is in DFU mode.



Watch the prompts carefully and follow along.





Step Eleven

Once QuickPwn detects your iPhone in DFU mode it will begin the jailbreak process.





Step Twelve

Once jailbreaking is complete QuickPwn will inform you that it was successfull.