How to Downgrade iPhone OS 3.1.3 Baseband 05.12.01 Using Fuzzyband


Fuzzyband has been up to date to incorporate downgrading enhance from the iPhone OS three.1.three baseband (05.12.01) for 05.08 bootloader customers (early iPhone 3G).

You’ll find Fuzzyband within the Machine part of Cydia. Directions on how one can operate the downgrade can also be discovered right here.

The use of this utility early iPhone 3G customers can downgrade their baseband to an unlockable model permitting them run OS three.1.three unlocked although they by accident upgraded. This wont work with iPhone 3GS.



In case your iPhone meets the above standards, that you can then use the most recent model of Fuzzyband which helps iPhone three.1.three to downgrade your 05.12.01 baseband to the older 04.26.08 even though you accidently upgraded to the inventory iPhone OS three.1.three from iTunes. After you have downgraded your baseband, that you can then use ultrasn0w to liberate your iPhone on iPhone three.1.three firmware. Right here’s the way you do it.

Step 1: To downgrade your baseband from 05.12.01 to 04.26.08, it’s a must to first jailbreak your iPhone 3G operating firmware three.1.three through the usage of any of 1 these publications:  redsn0w zero.9.three ,or  redsn0w 0.9.4 for iPhone 2G, 3G and iPod touch 1G/2GSn0wbreeze 3.1.3 V1.4

 Step 2: After you h
ave jailbroken your iPhone, Go to “Cydia” on your iPhone and Search for “Fuzzyband” and then install this application.



Step 3: Start “Fuzzyband” app and touch on “Downgrade” button to downgrade your Baseband from 05.12.01 to 04.26.08.



Step 4: You should now be able to perfectly unlock your iPhone 3G using the latest version of ultrasn0w by following the step-by-step guide posted here.

NOTE: For those of you who don’t know your bootloader, simply run Fuzzyband and it will report the version number for you.

You can follow our complete jailbreaking guide for iPhone 3.1.3 firmware for iPhone 2G, 3G, 3GS and iPod touch 1G/2G using redsn0w 0.9.3redsn0w 0.9.4sn0wbreeze,PwnageTool 3.1.5. Unlocking can be done using ultrasn0w or blacksn0w.


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