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Thread: Unable to Downgrade 3gs

  1. #1
    Default Unable to Downgrade 3gs
    Got the dreaded apple boot cycle today after installing something bad on my 3.01 3gs. I tried to reload 3.01 and kept getting errors that I couldnt use this build on my phone. Seems Apple won't even verify anything other than forcing you to upgrade to 3.1, which is what I was forced to do. Even after that, it still won't downgrade. Im on At&t so simlock dosent ever matter to me.

    Just thought I'd let everyone know my experience.


    Smitty

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    black_orchid (2009-09-11)

  3. #2
    Custom Title angiepangie's Avatar
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    Apple verifies all restores on the 3GS and all future devices.
    You won't be able to downgrade.
    I always feel sorry for the guy in the iPhone commercials. He always gets a call right in the middle of trying to do something

  4. #3
    funny thing is it had 3.01 on it and it wouldn't even let me reload that.
    It kept erroring not the right build for my phone (itunes 8.2).
    I even upgraded Itunes to see if that made a difference but it didnt.

    Well off to bed

    Smitty

  5. #4
    Custom Title angiepangie's Avatar
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    You won't be able to restore to any firmware except the latest version.
    I always feel sorry for the guy in the iPhone commercials. He always gets a call right in the middle of trying to do something

  6. #5
    The boot cycle can be bypassed without restoring - but a bit late if you've already updated.
    He who asks a question looks foolish for 5 minutes. He who doesn't ask a question remains foolish forever.

  7. #6
    I threw everything I could at it. I tried True DFU mode, restore mode, SSh'ing back in rejailbreaking.

    How is that done cause i tried every way I found on google to no avail.

  8. #7
    Custom Title angiepangie's Avatar
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    Confucious has his little mobilewatchdog bundle(?) way.
    You can't downgrade now though.
    I always feel sorry for the guy in the iPhone commercials. He always gets a call right in the middle of trying to do something

  9. #8
    iPhoneaholic reddawg's Avatar
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    Quote Originally Posted by confucious View Post
    The boot cycle can be bypassed without restoring - but a bit late if you've already updated.
    This hasn't happenned to me yet, but how do you bypass the dreaded boot cycle? Would you mind posting it?
    "When I die, I want to go peacefully in my sleep like my grandfather did...not kicking and screaming like the passengers in his car." -- Unknown

  10. #9
    Custom Title angiepangie's Avatar
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    You SSH in and move the mobilewatchdog.bundle (right?).
    Do a search for it. He's posted it multiple times

    [ame=http://www.google.com/search?hl=en&source=hp&q=mobilewatchdog.bundle&aq= f&oq=&aqi=]mobilewatchdog.bundle - Google Search[/ame]
    Last edited by angiepangie; 2009-09-11 at 04:43 AM. Reason: Automerged Doublepost
    I always feel sorry for the guy in the iPhone commercials. He always gets a call right in the middle of trying to do something

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    reddawg (2009-09-11)

  12. #10
    iPhoneaholic reddawg's Avatar
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    Quote Originally Posted by angiepangie View Post
    You SSH in and move the mobilewatchdog.bundle (right?).
    Do a search for it. He's posted it multiple times
    Thanks angiepangie. There are many postings on google. Here is one that seems straight forward.

    this is just because rebuilding the application map took more than 6 minutes and the mobile watchdog service rebooted your phone. this is a design flaw and you can even get it w/o jailbreaking if you have 9 pages of apps and somehow trigger a rebuild of the app map by crashing badly.

    *the irony here is that if you get into this state w/o being jailbroken you really do have to DFU mode and restore. gg apple.*

    easy fix:

    -ssh or use iphonebroswer to your phone while it has the ALOD (apple logo of death) and is bootlooping.
    -navigate to System/Library/SystemConfiguration/mobilewatchdog.bundle
    -rename mobilewatchdog.bundle folder to .bak or something. reboot
    -allow the phone to successfully rebuild the app map (mine took 10min)
    -after 1 successful boot immediately change the name of the mobilewatchdog.bundle folder back.
    -reboot your phone again and get a second successful boot
    -problem solved

    credits: iPhone ALoD: MAJOR design flaw!! - Mac Forums
    "When I die, I want to go peacefully in my sleep like my grandfather did...not kicking and screaming like the passengers in his car." -- Unknown

  13. #11
    Green Apple black_orchid's Avatar
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    I feel for you. I am terrified to do anything with my 3GS. I hope it doesn't take long to come up with a solution. iPhone are useless unless they are jail broken.
    LIVE FOR TODAY,
    BECAUSE TOMORROW
    IS NEVER PROMISED"

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