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Thread: Downgrade 3GS from 3.1.3 to 3.1.2 & activate with iTunes

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3G[S] Downgrading

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Jailbreak / Downgrading / Upgrading

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OK here is the method to activate your iPhone with iTunes if you have a factory unlocked iphone after downgrading to 3.1.2 1. Downgrade using method described here http://modmyi.com/forums/3g-s-downgr...ecid-shsh.html 2.
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  1. #1
    Green Apple
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    Default Downgrade 3GS from 3.1.3 to 3.1.2 & activate with iTunes
    OK here is the method to activate your iPhone with iTunes if you have a factory unlocked iphone after downgrading to 3.1.2

    1. Downgrade using method described here [Howto] Setup local 3GS restore verification server (ECID SHSH)

    2. Jailbreak with redsn0w (It will hacktivate your phone & you will have no signal)

    3. Now restore again using custom ipsw of 3.1.2 made using no activation option

    4. Restore will finish normally now (without any 1015 error) & iTunes will normally activate your iphone.. Enjoy :-)

  2. #2
    Livin the iPhone Life
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    That doesn't work for phones with the new bootrom, which the majority of people have. Just saying.

  3. #3
    My iPhone is a Part of Me
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    Fow windows users (sorry OSX guys, borrow a friends REAL computer), using QuickPwn 2.2 after step one to pull it out of recovery mode is easier, faster, and works with all 3G[S] unlike the custom firmware.

    1. Downgrade
    2. QuickPwn
    3. Activate
    4. redsn0w

  4. #4
    What's Jailbreak?
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    I'm with you looi3, when I hit the 1015 error I ram Quickpwm2.2 then backed up n synced, and Blackra1ned, worked like magic

  5. #5
    Green Apple marvin378's Avatar
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    is quickpwn 2.2 is compatible in 3GS with old bootrom?

  6. #6
    What's Jailbreak?
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    Yep, mines week 36, old bootrom, worked a treat,I just blackra1ned it after restore from back up and syc and then welcomed Cydia back with open arms

  7. #7
    Green Apple
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    I never had my phone jailbroken and I now have 3.1.3, how can I downgrade as it asks for an old schh?

  8. #8
    iPhoneaholic iphone8130hak's Avatar
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    You cant
    Keithsta

  9. #9
    What's Jailbreak?
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    No afraid you can't.

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