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Thread: Video Tutorial - Downgrading 4.0 to 3.1.2 [New Baseband]

  1. #1
    Default Video Tutorial - Downgrading 4.0 to 3.1.2 [New Baseband]
    Hey guys!

    I found it a bit of a struggle to find a video guide which explains downgrading 4.0 to 3.1.2; and so I thought I'd give it a try. I'm running an iPhone 3GS with 4.0, new baseband, and made a short video which explains how to perform the downgrade.

    Hope you guys find it helpful!

    (Also, I recommend viewing in 1080p, since the text is easier to read that way, and it's easier to follow along )

    [ame=http://www.youtube.com/watch?v=v-iQAY08zzg]YouTube - Downgrading iPhone - 4.0 Factory Settings/Unjailbroken to 3.1.2/3.1.3 Tutorial[/ame]
    Last edited by Sarghm; 2010-07-05 at 08:37 PM. Reason: HD

  2. The Following User Says Thank You to Sarghm For This Useful Post:

    khitomer (2010-07-06)

  3. #2
    Is this old or new bootrom? Also was iPhone jailbroken previously?

    Thanks for the tutorial.

  4. #3
    My phone did not get to be hacktivated. Will this method worK?

  5. #4
    iPhone? More like MyPhone
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    I'm sure this is nothing new and you need 3.1.2 shsh's on file right?

  6. #5
    Quote Originally Posted by bts0uth View Post
    I'm sure this is nothing new and you need 3.1.2 shsh's on file right?
    Correct!

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