Fuzzyband Now Supports iPhone OS 4.0b1 Baseband Downgrade

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Posted April 16, 2010 at 11:47am by iClarified

Fuzzyband has been updated to include downgrading support from the iPhone OS 4.0b1 baseband for 05.08 bootloader users (early iPhone 3G).

You can find Fuzzyband in the System section of Cydia. Instructions on how to perform the downgrade can be found here.

Using this utility early iPhone 3G users can downgrade their baseband to an unlockable version allowing them run OS 4.0b1 unlocked.

You can use this tutorial to find out your bootloader version or simply install Fuzzyband on your current OS and it will let you know if you have the correct bootloader.

Developers can use the newly released RedSn0w 0.9.5 beta software to jailbreak iPhone OS 4.0b1.

Fuzzyband Now Supports iPhone OS 4.0b1 Baseband Downgrade

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Comments (4)

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oakland6980 - May 27, 2010 at 5:48pm

i was able to downgrade my bb after updating to 3.1.3 using fuzzyband. since they are supporting OS4.0b1 can we assume that when 4.0 is actually released i can update trough itunes and downgrade my baseband with Fuzzy, right?? and unlock with ultrasnow.

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MINH TRAN - May 25, 2010 at 5:44pm

Helllo! I try to downgrade iPhone 3GS ,VERSION 3.1.3(7E18),MODEL MB715LL,MODEM FIRMWARE 05.12.01.FUZZYBAND IS NOT SUPPORTED BASEBAND BOOTLOADER 06.04(G2M3S2).BECAUSE FUZZYBAND ONLY SUPPORTED BASEBAND BOOTLOADER 05.08 .SO ANYONE HAVE SOME IDEA ? THANK YOU!

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aesbus - April 19, 2010 at 6:42pm

get this: Bootloader Version: 06.04 [G2M3S2] Baseband Version: ICE2-05.12.01 iPhone OS Version: 3.1.3 i cant believe it. my fault for not looking into jailbreaking earlier... typical typical typical. from what ive read, there is little interest from the community in getting around this apple roadblock. is that a correct assumption? peace! still love all you dev guys & iphone phineas phreaks!!!

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s001 - May 22, 2010 at 4:48am

I have a new iPhone 3gs with Bootloader 06.04[G2M3S2] BaseBand Version ICE2-05.12.01 OS 3.1.3 configuration. Is it can be unlockable?. Any fix avaiilable yet?

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