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Thread: Downgrade 2.2.1 firmware baseband?

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    Livin the iPhone Life
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    Default Downgrade 2.2.1 firmware baseband?
    Anyone have a successful way to do this on a Windows PC? I have a friend who accidentally upgraded their iPhone to 2.2.1 and the baseband with it and needs to go back so he can use it on T-Mobile.


    Thanks in advance.

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    Retired Moderator Poseidon79's Avatar
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    Not possible.

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