How to Downgrade Your Baseband Using KiPhone

How to Downgrade Your Baseband Using KiPhone

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These are instructions on how to downgrade your iPhone's Baseband using KiPhone. This software is a patched version of ZiPhone released by kIREmk. It has not been found to cause the issues some have experienced with ZiPhone.

To follow this tutorial you must have 1.1.4 firmware installed on your iPhone. If you accidentally downgraded to 2.0 then use this tutorial to downgrade to 1.1.4.

Watch the Video!
For your convenience this tutorial is available in video format also. Click the Watch It button to view the tutorial!

Step One
Download KiPhone from here to your desktop: Mac, Windows

Step Two
Double click the downloaded zip file to extract its contents.
How to Downgrade Your Baseband Using KiPhone

Step Three
Double click the extracted file (ZiPhoneOSX patched by kIREmK 04.05.04_G [En]) to launch the application.
How to Downgrade Your Baseband Using KiPhone

Step Four
Once the application has launched make sure the BL 3.9 & 4.6 tab is selected. Also make sure the Baseband downgrading checkbox is selected.
How to Downgrade Your Baseband Using KiPhone

Connect your iPhone to the computer and click the Start button. ZiPhone will put your iPhone into recovery mode and you will be informed that the process will take 2 mins and 30 seconds.
How to Downgrade Your Baseband Using KiPhone

If you are a windows user then simply check off Downgrade Baseband and Debug Boot and click the Start button.
How to Downgrade Your Baseband Using KiPhone

Step Five
Once the process is complete you will be informed that it completed successfully. You now have downgraded your Baseband to 04.04.05_G!
How to Downgrade Your Baseband Using KiPhone
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lipsinkinghaircut - July 2, 2011 at 1:07am
This is all I see: "Loading zibri.dat. i386 Searching for iPhone... USBMuxListenerCreate: No such file or directory" for iPhone 3g.
Farzan - April 27, 2009 at 5:29am
hi. i am farzan jalali from iran. i update iphone 3g frmware to 2.2.1 . now change baseband to 2.30 and no sim alert. plz help me. tnx
Gloria - May 15, 2009 at 11:06am
pero te ayudo si no dejas correo electronico para comunicarnos Gloria
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