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Thread: [SOLUTION] iPhone shut off during boot / Stuck Apple Logo

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I have tried all mac fixes including killsub and am still stuck in the reboot loop (apple logo, then screen turns white, then screen shows nothing). I will try to
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  1. #541
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    I have tried all mac fixes including killsub and am still stuck in the reboot loop (apple logo, then screen turns white, then screen shows nothing).

    I will try to get some pics of the verbose boot later.

    Here is what iRecovery looks like (it looks the same as before I applied any fixes, but has a higher failed boot count:

  2. #542
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    Quote Originally Posted by spooky655 View Post
    I have tried all mac fixes including killsub and am still stuck in the reboot loop (apple logo, then screen turns white, then screen shows nothing).
    Your profile says 'iPod Touch 2G' - why don't you just DFU to 312? ..

  3. #543
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    Quote Originally Posted by msft.guy View Post
    Your profile says 'iPod Touch 2G' - why don't you just DFU to 312? ..
    I don't want to lose the data off my iPod. Do you know another way to backup data?

  4. #544
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    Quote Originally Posted by spooky655 View Post
    I don't want to lose the data off my iPod. Do you know another way to backup data?
    As a matter of fact, yes. Yes, I do -)
    Working iPhone recovery ramdisk with SSH ;-)
    Working iPhone recovery ramdisk with SSH (Public wave)

    As long as you are capable of backing up your data over SSH.
    Here are the iv/keys for your ramdisk:
    Restore Ramdisk (018-6141-014.dmg)
    IV: f37bd3f9597c1acba87bfd4029a08ff9
    Key: de0e35e16213e69cb9c19dc527d9a96c

  5. #545
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    iBeej,

    After looking through the images from the continuous reboot problem, do you have any ideas??? Seems like a very, very involved fix to figure out what is wrong, which probably means a long time to get a working fix. Is this a priority for you right now?? Seems like most people got it work on a MAC and are gone now... most people still here have the continuous reboot problem.

    I'm not trying to push at all... I know you've been working hard. Just trying to get a feel for it, before I decide to restore.

    Its been ~2 weeks and I'm about out of options and may restore tonight to my September restore point (i know... what was I thinking not backing up more!!)

    msft.guy if you have any ideas of how to recover data, then please let us know or offer them to ibeej.

    Thanks guys.

  6. #546
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    Quote Originally Posted by msft.guy View Post
    As a matter of fact, yes. Yes, I do -)
    Working iPhone recovery ramdisk with SSH ;-)
    Working iPhone recovery ramdisk with SSH (Public wave)

    As long as you are capable of backing up your data over SSH.
    Here are the iv/keys for your ramdisk:
    Restore Ramdisk (018-6141-014.dmg)
    IV: f37bd3f9597c1acba87bfd4029a08ff9
    Key: de0e35e16213e69cb9c19dc527d9a96c
    Thanks for the links! I have 2 questions before I attempt this:

    1. If I try any of these steps, will I being putting, or is it possible to accidentally put, my iPod in a different state that will make it not recoverable with iBeej's fixes.

    2. Can I use this to transfer songs to my PC (I have always used sharepod for this).


    EDIT: Oh, and, if I'm jailbroken, can I use a ramdisk from the original (unmodified) apple ipsw?
    Last edited by spooky655; 05-20-2010 at 02:15 PM. Reason: Automerged Doublepost

  7. #547
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    Quote Originally Posted by spooky655 View Post
    Thanks for the links! I have 2 questions before I attempt this:

    1. If I try any of these steps, will I being putting, or is it possible to accidentally put, my iPod in a different state that will make it not recoverable with iBeej's fixes.

    2. Can I use this to transfer songs to my PC (I have always used sharepod for this.
    1. Before you get the SSH access, the risk is minimal - it's a ramdisk, so there are no filesystem writes until you actually log in via SSH. Once you get SSH access, you need to execute at least one command in the console (mount_hfs -o ro /dev/disk0s2s1 /mnt2) and I guess it's possible to screw this up, so be wary.
    If you manage to execute that command and mount the data partition read-only, you can copy your music using WinScp with no chance of data loss.

    2. Yes, music will be in the /mnt2/mobile/Media/iTunes_Control/. You should be able to copy it and then import into iTunes and it will recognize it by tags (actual songs are stored there renamed, but the tags are intact). Alternatively, you could find an app that can open the iTunes database, also stored under iTunes_Control (iTunes/iTunesCDB).

    PS. Both unmodified and jailbroken ramdisks work, but you absolutely need a pwned kernelcache file.

  8. #548
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    So restoring the ramdisk will not affect future attempts to fix my iPod without a restore (if I decide not to restore, so I can help test iBeej's fixes, and eventually recover my iPod that way)?


    Quote Originally Posted by msft.guy View Post
    PS. Both unmodified and jailbroken ramdisks work, but you absolutely need a pwned kernelcache file.
    How can I get one under Windows? Do I run redsn0w and take from the temp directory? Or Is there a different way?

  9. #549
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    Quote Originally Posted by spooky655 View Post
    So restoring the ramdisk will not affect future attempts to fix my iPod without a restore (if I decide not to restore, so I can help test iBeej's fixes, and eventually recover my iPod that way)?
    That's exactly the premise. A nitpick - you do not restore the ramdisk. You boot it and use it to start SSH server on the phone; ramdisk is located in RAM and therefore your device's permanent (flash) storage isn't modified - unless you do something destructive in SSH after mounting the volume readwrite.

    Quote Originally Posted by spooky655 View Post
    How can I get one under Windows? Do I run redsn0w and take from the temp directory? Or Is there a different way?
    I don't think redsn0w uses temp files. Instead, you can use sn0wbreeze tool to get a custom ipsw.
    Here's a download of sn0wbreeze 3.1.2: MEGAUPLOAD - The leading online storage and file delivery service
    Note that latest version only supports 3.1.3 firmware, which you can also use to build the ramdisk, just be sure to match ramdisk and kernelcache version!

    BTW, sn0wbreeze needs .NET 3.5, my ramdisk builder needs .NET 4.0, so you might have to install both, sorry

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    Thanks for all your help! I'll give it a shot.

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    Default Booting issues still existing after using 5.19.10 update
    Hi,

    Still experiencing non-booting issues after installing latest patch b33jsn0w-sc-dcc-0.1b-win. I tried the prior ones as well. At the moment after powering the phone, it would display the apple logo and then (using the verbose selection) run through a series of verbose stipulations and reboot doing the same thing over and over. Apparently not booting into the OS.

    The phone is iPhone 3G, running 3.1.2 and was jailbroken prior to the booting process debacle. Looking for any help in resolving this issue as I do not want to restore the iPhone and lose priceless photos and videos stored on it.

    Thanks

    Awulo

  13. #552
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    @msft.guy....

    I tried your SSHramdisk approach, but when I type the "ramdisk" prompt and hit Enter, my iPhone flashes a white screen and restarts...thus no ramdisk is created.

    Any ideas on this problem and how to get a ramdisk of my iPhone's content?

    Thanks for any help you can give!

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    Quote Originally Posted by bassix View Post
    @msft.guy....

    I tried your SSHramdisk approach, but when I type the "ramdisk" prompt and hit Enter, my iPhone flashes a white screen and restarts...thus no ramdisk is created.

    Any ideas on this problem and how to get a ramdisk of my iPhone's content?

    Thanks for any help you can give!
    Maybe I'm wrong, but I think you're misunderstanding it. I think "ramdisk" shows the status of the ramdisk, which you are supposed to check after uploading the kernelcache to your iPhone.

    @msft.guy

    The iphone tunneling software failed to find a dll. I think it's looking for it where it would be in xp, and, therefore, is not finding it on Windows 7.


    --After I send everything to my iPod, a progress bar does not come up.--

    EDIT: "ramdisk" returns "panic: arm_exception_abortdouble panic in"

    I ignored that and went on with the other steps. Initially, "iRecovery -c bootx" did nothing. I downloaded a newer iRecovery and now it forces my iPod back in the reboot loop. I used a jailbroken kernelcache via sn0wbreeze, and an original "*.dmg" (jailbroken would crash the ramdisk builder).
    Last edited by spooky655; 05-20-2010 at 05:52 PM. Reason: Automerged Doublepost

  15. #554
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    Well, I just tried the 5/19 version of the Windows fix... it ran OK, but still no luck. To be specific: 5.19.2010 4:00AM SC+DDC windows version...

    I'm stuck in a reboot loop - about 7-10 seconds of the Apple logo, then a white flash, then a reboot again.

    Verbose boot goes by too fast for me to see what's going on, but what little I can read before the white flash / reboot is talking about "Kernel continuation"... but it's really all flying by so fast, and my read on "kernel continuation" is not at the end right before the reboot...

    I'm not sure of a good way to capture the last message before that flash, unfortunately....

  16. #555
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    Something I noticed from making my reboot loop video... There's a message about exec launchd failing "errno: 8". It's hard to tell, but I think launchd errors show more than once...

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    Got it: you need to execute 'ramdisk 0x90000000' !
    otherwise, reboot and whitescreen.
    Sorry about that.. -(
    Last edited by msft.guy; 05-20-2010 at 07:43 PM. Reason: Automerged Doublepost

  18. #557
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    @msft.guy... Thanks for the info, but attempting the "ramdisk" command after loading the iBEC file and .dmg.ssh file makes the iPhone flash a white screen and reboot...and then shutdown in 3-4 mins (the initial problem).

    Suggestions?

  19. #558
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    @bassix

    Did you first enter "iRecovery -s" before ramdisk?


    @msft.guy

    I loaded iBEC and my iPod screen went blank. I then entered "iRecovery -f ...dmg.ssh", then "iRecovery -s", then "ramdisk". "ramdisk" returned this:
    http://img6.imageshack.us/img6/551/ramdiskibecpanic.jpg

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    It's nice having a partner in crime. Glad to see you helping out with this msft.guy. You know an awful lot about this too, which means you are either a giant geek like me or very close to the dev-team. You obviously code and have ties to somewhere.

    How are your reverse engineering skills?

    C'mon spill it, I'm on to you.

    Welcome aboard mate. I hope you realize what you got yourself in to if you're sticking around.


    BEEJ
    Last edited by iBeej; 05-28-2010 at 12:16 PM.

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  22. #560
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    Quote Originally Posted by iBeej View Post
    Glad to see you helping out with this msft.guy.
    That wasn't directed at me was it?

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