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Thread: Downgraded from 3GS 4.0.2 -> 3.1.2 story

  1. #1
    My iPhone is a Part of Me Madman604x's Avatar
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    Default Downgraded from 3GS 4.0.2 -> 3.1.2 story
    OK so here's the story

    Bonehead at work buys another friend's 3GS that has been Jailbroken and all SHSH stored.

    first thing he does is take it home and updates to 4.0.2 <facepalm>

    brings it to me to fix. ok no problem he has the SHSH's on Cydia. A simple shif + restore should do the trick, right?

    nope.

    3 hours later I finally find a solution online but its not perfect.

    1. Set phone in DFU mode
    2. connect to iTunes and Shift+Restore to desired Firmware (3.1.2 in my case)
    3. it WILL fail. I got Error 1015.
    4. iTunes will prompt u to restore again, go ahead and do it.
    5. it will FAIL yet again. (same error code)
    6. Run Redsn0w 9.4 (ONLY 9.4) choose the 3.1.2 firmware, unchecking any boxes that are already checked.
    7. when RS is done its business, it should reboot and you should be booted into a 3.1.2 springboard.

    PROBLEMS.

    -Jailbreakme.com caused the phone to turn off and reboot. not respring but REBOOT. FAIL
    -Blackra1n did not work at all.
    -Phone had NO signal. i see LOW bars but really no service.
    -iTunes CANNOT restore to 3.1.2 again.

    Solutions

    Jailbreak AGAIN with Redsn0w, this time checking off "Install Cydia"

    let it do it's buisness, and reboot. Cydia should show up now.

    goto Cydia and then sources, and add repo666.ultrasn0w.com

    install Ultrasn0w and you will get your cell reception back.

    as for the itunes issue, it still gets the error 1015. i have no solution for that.

    AFAIK it works fine otherwise. Still better than a $400 iPod Touch, or he could undo all my work again by updating to 4.0.2
    Last edited by Madman604x; 2010-08-25 at 06:28 PM.

  2. #2
    redsnow doesn't see my 3.1.2 blob

  3. #3
    My iPhone is a Part of Me Madman604x's Avatar
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    blob? i pointed redsn0w at the 3.1.2 firmware.

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