How to Downgrade Your iPhone 3G Baseband Using Fuzzyband

How to Downgrade Your iPhone 3G Baseband Using Fuzzyband

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These are instructions on how to downgrade your baseband to 2.28 for iPhone 3Gs with the 5.8 bootloader using Fuzzyband. This will allow you to unlock your iPhone 3G using YellowSn0w.

Fuzzyband is the preferred application for downgrading your baseband since it does version checking, downgrades all versions of baseband from 2.30.03 to 4.26.08 (3.0 beta5), and it reports the current bootloader version on screen.

Step One
Press to launch Cydia from your SpringBoard.
How to Downgrade Your iPhone 3G Baseband Using Fuzzyband

Step Two
Press to select the Sections tab at the bottom of the screen.
How to Downgrade Your iPhone 3G Baseband Using Fuzzyband

Step Three
Press to select System from the list of sections
How to Downgrade Your iPhone 3G Baseband Using Fuzzyband

Step Four
Press to select 3G Fuzzyband Downgrader from the list of packages
How to Downgrade Your iPhone 3G Baseband Using Fuzzyband

Step Five
Press the Install button at the top right of the screen.
How to Downgrade Your iPhone 3G Baseband Using Fuzzyband

Step Six
Press the Confirm button at the top right of the screen to begin installation.
How to Downgrade Your iPhone 3G Baseband Using Fuzzyband

Step Seven
Once installation has completed successfully press the large Return to Cydia button.
How to Downgrade Your iPhone 3G Baseband Using Fuzzyband

Step Eight
Press the Home button to return to your SpringBoard. Notice there is a new application icon titled Fuzzyband. Press to launch the application.
How to Downgrade Your iPhone 3G Baseband Using Fuzzyband

Step Nine
Immediately upon launching the application you will be shown a message stating that Fuzzyband is querying your modem.
How to Downgrade Your iPhone 3G Baseband Using Fuzzyband

Once it completes you will be displayed your Bootloader Version, your Baseband Version and your iPhone OS version.

If you have a bootloader version higher then 5.08 you will not be able to downgrade your baseband and a Not Supported message will be displayed.
How to Downgrade Your iPhone 3G Baseband Using Fuzzyband

If you have the 5.08 bootloader you will be able to downgrade from baseband 2.30 or higher. Press the Downgrade button to begin downgrading your baseband.
How to Downgrade Your iPhone 3G Baseband Using Fuzzyband

Step Ten
Once the downgrade has completed successfully you will be displayed a Done! message saying, "I Haz Downgrade!" and you will be on the 2.28 baseband.
How to Downgrade Your iPhone 3G Baseband Using FuzzybandHow to Downgrade Your iPhone 3G Baseband Using Fuzzyband


***THANKS: to w1kedZ/DHowett for creating this utility
wiiguy28 - November 7, 2010 at 2:59pm
can I update my iphone 3g /3.1.2/ 5.11.07 to a later version and still keep my jailbreak and unlock?????please , thank you
Jay - March 12, 2010 at 7:26pm
Hi, I have a 3g iphone with bootloader 06.2[g2m3s2] and base band ICE2-05.12.01 version 3.1.3 how can i downgrade it?
amyl56 - February 11, 2010 at 11:33am
My Cydia doesn\'t have Fuzzyband what should I do?
kylie - March 1, 2010 at 9:15am
Go into Cydia>changes>reload Cydia should update and Fuzzyband should be availible
amyl56 - March 5, 2010 at 10:54am
Is it nessesary to have wi-fi service in order to access Cydia?
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