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Thread: How to Downgrade iPhone 3G iOS 4 to 3.1.2

  1. #1
    Default How to Downgrade iPhone 3G iOS 4 to 3.1.2
    I hate iOS 4! I've been searching for ways to downgrade back to 3.1.2. I think this guide looks good, but will I lose all of my MMS, numbers, apps, etc?

    This guide gives an extra set of instructions at the end, which explains that you can after downgrading, choose a backup! woo hoo. about to start the process...
    Last edited by iraethan; 2010-07-07 at 06:20 AM. Reason: Automerged Doublepost

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

    KuRuPtIoN (2010-07-08)

  3. #2
    My iPhone is a Part of Me
    Join Date
    Apr 2010
    N. Ireland
    Thanked 81 Times in 75 Posts

    Well the backup you restore from must be FW 3.1.3 or earlier. It won't restore and iOS4 backup to a 3.1.3 device.

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