iOS 4.1 Boot loop/Respring loop and iDevice Troubleshoot thread

Discussion in 'iOS Jailbreak & Cydia' started by 42395_skyline, Oct 15, 2010.

  1. 42395_skyline

    42395_skyline Community Development Staff Member

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    Device:
    iPhone 6
    Table of Contents:
    1. How to get into Recovery Mode
    2. How to get into DFU Mode
    3. If you messed up a .plist edit or any other mod in your file system
    4. If you installed a package that messed up your iDevice
    5. If you're stuck in Recovery Mode
    6. Troubleshooting "Kick Device Out of Recovery"
    7. If you're stuck in Recovery Mode part 2
    8. If none of this helped you and you still cannot restore

    All titles are in red bold


    How to get into Recovery Mode:
    Make sure your iDevice is completely off and unplugged. Hold the home button and connect your iPod to your computer while still holding down the home button until you see the connect to iTunes screen. You are now in Restore Mode

    How to get into DFU Mode:
    1. Make sure your iDevice is completely off and plugged in
    2. Hold down the power and home button.
    3. When you see the Apple logo, release the power button but continue holding the home button until iTunes displays that you are in Recovery Mode (really DFU Mode)

    If you messed up a .plist edit or any other mod in your file system:
    This is only if
    1. You know what you did to mess up your iDevice
    2. Your Jailbroken

    IMPORTANT: Plug in your iDevice to your computer, if iTunes picks it up try to do a backup. If not, move on to the rest of the guide.

    Windows:
    1. Plug in your iPod into your computer and open or download iFunBox (http://www.i-funbox.com/)
    2. When iFunBox is open, hold down the home button and the power button at the same time untill the apple logo/spinning logo is gone and the iDevice turns back on.
    3. When the iDevice is on, search your file system for the problem. You will have a few minutes before your device reboots and you need to start the search all over. If you find the problem save it to your PC before it reboots or you might have to find and fix the problem all over again. Then just transfer the file back over to your iDevice and reboot.

    Mac:
    Use DiskAid (http://www.digidna.net/products/diskaid) and follow steps 2 and 3.

    I hope I helped someone from needing to restore. I myself personally know that when I first started to jailbreak (back in 2.2.1 on my iPod 2G) I used to mess up my file system and need to restore, but when I found out I can SSH with my iPod stuck in a boot loop, I was happy.

    Extras: If you need to send commands into your iDevice to fix it, use WinSCP (windows, http://winscp.net/) and press ctrl+t (I believe, correct me if I'm wrong) or CyberDuck (Mac, http://cyberduck.ch/) and Go → Send Command...

    If you don't have OpenSSH installed, but need to send commands to fix it, I'm sorry. I don't know any programs that can do that.

    If you installed a package that messed up your iDevice:
    This is only if:
    1. You installed a package from Cydia that messed up your iDevice
    2. You know the name of the package identifier that messed up your iDevice
    3. You have OpenSSH installed

    IMPORTANT: Plug in your iDevice to your computer, if iTunes picks it up try to do a backup. If not, move on to the rest of the guide.

    If you don't know the name of the package ID that messed up your device, such as com.skyline.mypackage search Google for "AppName package id" and look for it. It will either be com.devname.packagename or it will be the name of the package itself, such as sbsettings and activator. After you find the package ID move on to the next step.

    Next open WinSCP (Windows) or Cyberduck (Mac) and open a terminal prompt (ctrl+t for WinSCP and Go → Send Command... on Mac). Type
    Code:
    apt-get remove PACKAGE ID HERE
    then if it asks you if you want to continue type y or n, type y. Then type
    Code:
    reboot
    and your iDevice should reboot perfectly.

    If you installed multiple things at once and are not sure which caused the problem, Google each and find out if all of them are supported on your firmware, if you find one that is not just remove that first, as that might be your issue.

    If you're stuck in Recovery Mode:
    Download TinyUmbrella, open it and wait for it to recognize your device in Recovery Mode, then click the "Kick Device Out of Recovery" button.

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    If nothing still works, go to "If you're stuck in Recovery Mode part 2".

    Troubleshooting "Kick Device Out of Recovery":
    If kicking the device out of recovery does not work do these steps EXACTLY:
    1.Unplug your iDevice
    2.Close iTunes (if opened)
    3.Close TinyUmbrella
    4.Plug in iDevice
    5.Open iTunes, if it doesn't already
    6.Open TinyUmbrella
    7.Click "Kick Device Out of Recovery"
    If nothing still works, go to "If you're stuck in Recovery Mode part 2".


    If you're stuck in Recovery Mode part 2:
    If you are stuck in Recovery Mode and part one did not work for you, or you restore into recovery mode, then try these simple steps:

    -If you restore to a custom firmware:
    Try re-building your custom firmware using a different firmware then used the first time. If it doesn't work still, try a DFU mode restore to the firmware. If still nothing restore to a stock firmware if possible. For iPhone users afraid to lose their unlock, run TinyUnbrella with iTunes closed then click "Start TSS Server". After it starts open iTunes and restore. This SHOULD save your baseband and allow you to still unlock your phone. My friend does it with his iPhone 4 and it works, but he doesn't rely on an unlock. I do, so I never tried (just in case it wants to fail on me.) After it restores you should get an error code, ignore it and open TinyUmbrella and wait for it to recognize your device in Recovery Mode, then click the "Kick Device Out of Recovery" button.

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    -If you restore to an official firmware:
    Delete the current firmware stored in
    Windows:"C:\Users\username\AppData\Roaming\Apple Computer\iTunes\"iPod" or "iPhone" Software Updates\
    Mac:"Users/username/library/itunes/"iPod" or "iPhone" software updates/"
    Then open iTunes and press restore, it will download and restore to a fresh firmware.


    If none of this helped you and you still cannot restore:
    Try these simple steps in order(recommended):
    Reboot your computer, try restoring.
    Reinstall iTunes, try restoring.
    Make a new users account on your computer, try restoring in it.
    Try steps on another computer.

    If I helped you please post

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    Suggestions by:
    Hurr Durr for suggesting "If you're stuck in Recovery Mode"
  2. alphonse3344

    alphonse3344 Well-Known Member

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    A perfectly well thought out solution mate

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    Nice work!
    Simply fantastic

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  3. 42395_skyline

    42395_skyline Community Development Staff Member

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    Thanks for the compliment

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  4. or you could restore
  5. mkm159

    mkm159 Well-Known Member

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    Restoring is NOT always the best option for many. For example, I have a HUGE library of music, and resyncing it all would not be fun.

    thanks for this!
  6. 42395_skyline

    42395_skyline Community Development Staff Member

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    ... Did you not read my post? Do you not understand the point of this thread?
  7. The Killswitch

    The Killswitch Well-Known Member

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    Wish I thought about this before I restored...that was a good 1-2 hours well spent...
  8. iBricked

    iBricked Well-Known Member

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    Some tips on finding the problem may be nice. Not for me but for others. This has helped my many times, even before this guide. Title should be changed and stickied. Real nice job
  9. 42395_skyline

    42395_skyline Community Development Staff Member

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    Thanks

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    I really don't know any tips, since people have different problems :/ I think I know something I can add though, Thanks for your help in giving me the thought

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  10. 42395_skyline

    42395_skyline Community Development Staff Member

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    Well, know you know at least.
    I made this thread since everyone keeps posting threads with so many .plist edits. So I'm sure that some people might need it.

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