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Discuss HELP! iPhone reboots 26 times in 60 secs (stuck in loop after RESET) at the General - Hackint0sh.org; Hi, I need help and need it fast please. I have an 8 GB 2G ...
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    Angry HELP! iPhone reboots 26 times in 60 secs (stuck in loop after RESET)

    Hi,

    I need help and need it fast please. I have an 8 GB 2G (silver back) iPhone here which reboots 26 times in 60 seconds (no joke - counted each restart exactly for 60 seconds). It has black screen (powered off), apple logo for a sec -or less than a sec- and then powered off again, looping.

    I was reading forums online since Monday, every night I come home I spend 3-4 hours surfing the net, testing any 'solutions' I find online, must be 15+ hours by now. Nothing worked so far. So I give up. Please help if you can. Thanks!

    It was a jailbroken 3.1.2 custom firmware and I masterfully did a reset, I am not exactly sure which one I used but I guess it was "reset all settings" one.

    Situation now:

    * when I do NOT connect iPhone to charge (USB or plug) then it does not do anything (as in dead battery).

    * when I DO connect iPhone to charge (USB or plug) then it does the reboot show non-stop.

    [Unnecessary Fact of the Day: Today I brought this phone to work and connected to my laptop just to see if it will get tired of rebooting non-stop. I was able to monitor the phone next to my laptop screen all day, and it did not stop even give a break. 26 times x 60 mins x 11 hours (had a long day) = if I am not miscalculating, this phone must have had 17160 restarts just today.]

    I understand boot process gets stuck at some point and at that very exact point it just rewinds and gets stuck at the same point looping.

    So my very sophisticated question is: how can I fix this? or more specifically how can I get it to DFU?

    This thousands of reboots only goes on and on IF I don't play with the buttons. If I play with the power button, at some point I manage to get the recovery screen logo ("usb -> itunes" logo). With two different Windows and one Mac PC I was unable to make computers "see"/"detect" the phone. iTunes don't see it, iRecovery or similar software do not see it.

    I guess DFU mode & a restore will fix my problem but unfortunately I CANNOT get into DFU mode. (note: I know what is DFU mode, I know the difference, I know how to get into DFU mode, I did get into DFU mode with other iPhones and this iPhone, BUT THIS ONE NOW DO NOT GO INTO DFU MODE).

    To sum it all up again:
    * 8 GB 2G iPhone stuck in boot sequence
    * Can get recovery logo and stay there for a short while (1 min at max) but even at this stage iTunes or other software cannot detect/see the phone
    * Cannot get into DFU mode (did try any "how to get into DFU mode" tutorials, including the fancy youtube video with countdown & music).
    * blackrain,iLiberty etc. can't "see" the device...
    * can get recovery screen

    Thanks in advance for any input...

    Regards

    themrwho


    EDIT #1 - I think I have a software-broken HOME button because when iPhone is off and I start pressing and holding BOTH power & home buttons, after first few seconds apple logo appears (as if I've pressed -and held- only power button) and before 10 seconds it just shuts down abruptly (as if electric power cut & battery taken out instantly). if home button worked it shouldn't turn off so abruptly I guess. I can test tomorrow on another iphone actually.
    Last edited by themrwho; 02-19-2010 at 02:20 AM.



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    so no ideas, anyone?

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    Super Moderator Array Olethros's Avatar

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    Default Re: HELP! iPhone reboots 26 times in 60 secs (stuck in loop after RESET)

    Quote Originally Posted by themrwho
    so no ideas, anyone?
    With such a broken install and no home button you are rather screwed. See if you can get someone to take it apart and fix the home button.
    Please read the stickies & search forum before posting!
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    Quote Originally Posted by Olethros View Post
    With such a broken install and no home button you are rather screwed. See if you can get someone to take it apart and fix the home button.
    Olethros,

    Thank you for replying. I think the phone hardware is all OK (home button=OK, data port=OK) because this phone was working all fine (apart from performance issues) with 3.1.2 UNTIL I did the reset thing (stupid I now know).

    So there must be a way to fix this without touching the hardware, no?

    My problem is I cannot make the computer (PC or MAC) see/talk/access the iPhone at all with known methods (iTunes,iRecovery,iLiberty+ etc.). Any other methods?

    Thanks again.

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    Super Moderator Array Olethros's Avatar

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    Default Re: HELP! iPhone reboots 26 times in 60 secs (stuck in loop after RESET)

    When you can't get into DFU mode then you most likely have a hardware problem.

    Either with the home or sleep button or with the dock connector. Or your USB cable.

    You don't even need a computer to put the device into DFU mode.

    Simply use a USB charger like the one your iPhone came with. Perform the same steps, force a restart - hold down home and sleep for 10 secs then release sleep and continue holding home button. This will give a black screen with a backlight.

    When you transfer the phone in this state to your PC it should detect it in DFU mode.

    That process eliminates the PC from the diagnostic process to a large degree.

    If you can get the phone into DFU mode this way and the PC still can't detect the phone then your USB cable is bad or your USB port does not put out enough power or you have the iTunes software incorrectly installed.
    Please read the stickies & search forum before posting!
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    Hi Olethros,

    Again a big thanks for your post.

    Quote Originally Posted by Olethros View Post
    When you can't get into DFU mode then you most likely have a hardware problem.
    I don't want to sound like stupid or totally clueless BUT this hardware was definitely OK before I did a reset on a jailbroken phone.

    I really really believe hardware is as healthy as a brand new 8 GB iPhone. Everything started with the RESET. That software-wise disabled the home button, thus a hardware fix will not fix anything. I believe this strongly because I read in other forums/blogs that this happened to other people too.

    There must be a way to make this phone go into DFU mode with its current condition.

    I'm at my wits end! Any other ideas?

    Thanks again.
    Last edited by themrwho; 02-19-2010 at 11:23 PM.

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    Super Moderator Array Olethros's Avatar

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    DFU mode is hardware based, there is no software involved.

    You just need the two buttons to work and USB power via the dock connector. That is it.

    Your cable could be screwed (there are a lot of cheap 3rd party Chinese cables where they left off the required shielding so that that are only reliably good for charging)

    Your home button could have suddenly got stuck.

    Or the reset all settings could have suddenly revealed a NAND failure.

    Let the thing go flat and try again.
    Please read the stickies & search forum before posting!
    How to report an iTunes restore/update fail in a useful manner
    -

    iPad 3G 64GB (4.3.3, Redsn0w) oldest SHSH 3.2.2
    iPhone 4 32GB (4.2.1, Redsn0w JB-monte) oldest SHSH 4.1
    iPhone 3GS 32GB (4.3.3; Pwnagetool) factory unlocked oldest SHSH 3.1
    iPhone 8GB (3.1.3; Pwnagetool) AT&T Locked - Unlocked with bootneuter

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    Quote Originally Posted by Olethros View Post
    DFU mode is hardware based, there is no software involved.

    You just need the two buttons to work and USB power via the dock connector. That is it.

    Your cable could be screwed (there are a lot of cheap 3rd party Chinese cables where they left off the required shielding so that that are only reliably good for charging)

    Your home button could have suddenly got stuck.

    Or the reset all settings could have suddenly revealed a NAND failure.

    Let the thing go flat and try again.
    Olethros,
    Thank you for your continued support.

    There are some news. I was playing with this iPhone as always and I once more connected it to my gf's mac and it just turned on. This time the 'broken' OS booted and I have it running as usual.

    Home button still does not work. I clicked into settings and now I am in the Settings page and cannot go back as the home button does not function.

    I can turn it off, and then back on and I will be back to home screen but what if it does not boot up again. Last time it took 4 days to have it boot, not sure I want to risk it again.

    Now the problem is, this iPhone is up & running without home button and as I believe it is a software-wise-broken-home-button I need to restore another version of iPhone OS.

    But how can I do that as it is not recognized by my PC (windows #1), her PC (windows #2) and her Mac?

    Thanks

    edit - re phone: it is a 'good' copy with original cable and this is my gf's iphone. also I do have another 'good' iphone with original cables. so we have 2 copies of all original hardware. plus at work I tried with a 3rd copy of cable / dock. and also tried on 5 or so computers so far. we've plenty of everything except the knowledge to fix it
    Last edited by themrwho; 02-20-2010 at 08:03 PM.

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    Now it doesn't detect even the charger! (not on USB not on electric charger) tried with two different cables. the other iPhone (mine) does detect both cables. definitely sth wrong with this problematic iphone

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    Super Moderator Array Olethros's Avatar

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    Quote Originally Posted by themrwho View Post
    Now the problem is, this iPhone is up & running without home button and as I believe it is a software-wise-broken-home-button I need to restore another version of iPhone OS.
    There is no such thing as a software wise broken home button when you can't get into DFU mode or force a restart. You have faulty hardware.

    Quote Originally Posted by themrwho View Post
    Now it doesn't detect even the charger! (not on USB not on electric charger) tried with two different cables. the other iPhone (mine) does detect both cables. definitely sth wrong with this problematic iphone
    Definitely faulty hardware. The weird thing is that the two items you report as faulty (dock connector and home button) are separate spare parts. They are both located in bottom of the phone so maybe there was some water damage that caused both parts to start to fail.

    I would be looking at a warranty claim or if the device is no longer under warranty at replacing or at least cleaning those two parts.
    Please read the stickies & search forum before posting!
    How to report an iTunes restore/update fail in a useful manner
    -

    iPad 3G 64GB (4.3.3, Redsn0w) oldest SHSH 3.2.2
    iPhone 4 32GB (4.2.1, Redsn0w JB-monte) oldest SHSH 4.1
    iPhone 3GS 32GB (4.3.3; Pwnagetool) factory unlocked oldest SHSH 3.1
    iPhone 8GB (3.1.3; Pwnagetool) AT&T Locked - Unlocked with bootneuter

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