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Thread: Downgrade from iOS4 to 3.1.3 and jailbreak and unlock iPhone 3G

  1. #1
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    Wink Downgrade from iOS4 to 3.1.3 and jailbreak and unlock iPhone 3G

    Have you updated to iOS4, suffered the decreased performance and want to go back to 3.1.3? Here's how to do it:


    What you need
    iPhone1,2_3.1.3_7E18_Restore
    iPhone1,2_3.1.2_7D11_Restore
    redsn0w 0.9.4
    blackra1n


    Here is how to do it

    1. Put your phone in DFU mode

    2. Open iTunes hold shift and click Restore at the same time
    you will now be able to select the 3.1.3 ipsw




    Let iTunes restore your phone after it is finished you will get an error like 1015 in iTunes and your phone will be in restore mode to exit this run blackra1n.




    When you get this message click ok and minimize iTunes.
    Open blackra1n and click make it 'make it ra1n'.




    When you see this:




    Physically power cycle the phone at this point the phone will restart normally.

    Now run redsn0w 0.9.4 to jailbreak your iphone.




    You need to select a 3.1.2 ipsw at this point then follow all the on screen instructions.




    When redsn0w has finished and your phone reboots, select Cydia and let it load and update.




    When Cydia reboots go to Sources and select repo666 and select ultrasn0w.



    When this is installed your phone will reboot and be unlocked!

  2. The Following 3 Users Say Thank You to omg For This Useful Post:

    maXimus (07-11-2010),nsandymary (07-11-2010),Thomas (07-11-2010)

  3. #2
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    Excellent guide omg!

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    Very good guide omg!!

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    Great Work on the guide, omg
    It looks n00b friendly too. If i had an iPhone i would try it.

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    Looks like a great guide!

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    Quote Originally Posted by maXimus View Post
    Excellent guide omg!
    maX,
    Do you have to go all the way to 3.1.2 or can I stop at 3.1.3? I don't really care about Jail-break. I just want 3.1.3 back - Argh!
    HolmanGT
    Saint George, UT

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    death2012 (07-12-2010)

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    awesome guide mate

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    Quote Originally Posted by HolmanGT View Post
    maX,
    Do you have to go all the way to 3.1.2 or can I stop at 3.1.3? I don't really care about Jail-break. I just want 3.1.3 back - Argh!
    You should be able to stop on 3.1.3 with no problem if I'm not mistaken.

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    Quote Originally Posted by maXimus View Post
    You should be able to stop on 3.1.3 with no problem if I'm not mistaken.
    Thanks maXimus, I'll let you know who it goes.
    HolmanGT
    Saint George, UT

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    you can stick with 3.1.3 but need the 3.1.2 ipsw for redsn0w 0.9.4 to jailbreak 3.1.3

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