Unlock I phone 3G and 3Gs with Any Baseband

Jailbreak and Unlock iPhone 3GS and iPhone 3G with iOS 4.2.1 and Redsn0w 0.9.6b5 

( This will work with any baseband and any firmware on i Phone 3G)

you are wondering how to use redsn0w to jailbreak and unlock, you are at the right guide. This is a two stage process, first you jailbreak your iPhone with redsn0w and update the baseband, and then you unlock the iPhone 3GS or iPhone 3G with ultrasn0w 1.2 unlock.

Download redsn0w 0.9.6b4 or download redsn0w 0.9.6b5 for Mac or Windows

Download iOS 4.2.1 IPSW that corresponds with the hardware that you want jailbroken

After you have downloaded redsn0w and the IPSW file, launch redsn0w 0.9.6b5 (Windows users must run redsn0w as Administrator in XP Compatibility Mode)

Click on “Browse”

Select the IPSW file you downloaded that corresponds to your iOS

• Jailbreak only: In the next screen, select that you want to install Cydia

Unlock & Jailbreak: Select that you want to install Cydia, and also select that you want to install iPad baseband (this works with iPhone 3GS and iPhone 3G)

If you have selected the iPad baseband, you will see a warning screen asking you to verify that you want to install the baseband update – this voids your warranty and you will not be able to downgrade or revert this update

• Click “Yes” if you want to unlock and understand the ramifications of losing your warranty and permanently updating the baseband
• Now follow the instructions in redsn0w to jailbreak and unlock the iPhone, turn it off then connect the iPhone to your computer and click “next”
• Following the directions, put your iPhone into DFU mode by holding the Home and Power buttons together for 10 seconds, then release the power button and just hold onto the Home button for an additional 3 seconds
• The i phone screen may flash
• Click on “Finish” and the device will be jailbroken, if you chose to install the 06.15 baseband this will be installed too
• NOTE: It’s a good idea to reboot your iPhone manually before trying to use Cydia

Now that the iPhone is jailbroken, you need to unlock the iPhone with ultrasn0w 1.2:

• Once your iPhone has been rebooted, launch the newly installed Cydia
• Tap “Manage” and then tap “Sources”
• Tap on “Edit”
• Tap on “Add” then enter the following URL for a repository: http://repo666.ultrasn0w.com
• Then tap “Add Source”
• Cydia will now update its sources
• Search for “ultrasn0w 1.2″ within Cydia
• Download and install ultrasn0w 1.2 and then restart your iPhone, this will unlock youriPhone 3GS and iPhone 3G
• Enjoy your unlocked iPhone