Cannot boot 4.2.1 redsn0w tethered after reset

Discussion in 'iPad Hacking' started by andry1234, Mar 17, 2011.

  1. andry1234
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    andry1234 iPF Novice

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    Hi to everyone,
    it seems like I have a very big problem. I had the 4.2.1 mounted on my iPad, jailbroken with redsn0w tethered mode. The iPad was at 21% and I had to delete all the things in it..... What I did?? I went in settings, then reset, then erase all data and content... It restarted to clean itself but now it's into an infinite loop...
    I googled a lot, trying for every possible solutions..... I tried of everything, but I cannot make it works....
    Everyone did the same exact thing and solved???

    Thank u soo much for ur help..

    Andrea
  2. f4780y
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    f4780y Super Moderator Staff Member

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    You will need to restore in iTunes from DFU mode on the iPad. AFAIK it must be DFU in this situation, nothing else will do.
    If you are trying to restore to 4.2.1 and not 4.3 make sure you are using tinyumbrella to serve up the right shsh blobs to iTunes (assuming you saved them when you jailbroke)
    If you don't have blobs saved your only option is to restore 4.3 at the moment.

    Hope that helps...
  3. andry1234
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    andry1234 iPF Novice

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    I cannot enter in a normal DFU mode cause I got the infinite loop with the white apple logo.
    This is a tethered jailbreak, so I think I need to turn on with the redsn0w option "boot tethered now" but... I cannot follow the instructions, it always tell me "DFU mode failed".....
  4. biobunny
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    biobunny iPad Junkie

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    Wait a few days until the battery dies and then try DFU. Next time wait for a untethered jailbreak, and even then wait for it to mature so they can fix big bugs if there are any.
  5. andry1234
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    andry1234 iPF Novice

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    Yes, I thought to this too... My iPad is low battery, I bother it a lot of times, pressing the sleep button, to make the battery reaches zero.... I hope that this procedure will give me back the DFU mode......
  6. biobunny
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    biobunny iPad Junkie

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    Just do nothing. Put it in a cabinet perhaps to resist the urge.
  7. andry1234
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    andry1234 iPF Novice

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    Oh ok bionunny, I will bother just sometimes to see if the iPad is totally at zero..... Do u think this can help in resetting everything? If the nand is totally corrupted is possible to change it in an human way?

    Thank u
  8. biobunny
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    biobunny iPad Junkie

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    When your putting your iPad in DFU mode your replacing your entire bootloader as well as your firmware. Wait, sorry I forgot to mention that a dead iPad can't get to DFU. So try plugging it in your Mac/PC after it's dead and then try DFU mode.
    Last edited: Mar 19, 2011
  9. andry1234
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    andry1234 iPF Novice

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    OK, but now it gets in a strange DFU mode, I'm sure is something like that cause the iPad ignores my input (keys, cables.... just blank screen).... but the computer doesn't recognize it...
    If it gets totally to zero, I reconnect and try to put in DFU, do u think there a possibility it will work again?
  10. biobunny
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    biobunny iPad Junkie

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    Yes, DFU mode will help it (hopefully) and in technical terms in DFU mode the iPad doesn't attempt to even start up it just is like booting a PC/Mac/Linux from a restore disk and waiting for it to get erased.
  11. biobunny
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    biobunny iPad Junkie

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    Try another PC/Mac such as maybe your friends. Then just restore it there and don't synch it. Or try another USB port.
  12. andry1234
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    andry1234 iPF Novice

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    I already tried with two Macbook Pro, all the usb ports... Tried even on a PC with windows XP installed.. nothing...
    Last hope is to make the battery reach zero and pray that the DFU mode will work..
  13. biobunny
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    biobunny iPad Junkie

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    Other iPad masters, please help us!
  14. andry1234
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    andry1234 iPF Novice

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    Ultraquote..
    This is a very rare situation..
  15. biobunny
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    biobunny iPad Junkie

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    I think you had it =(.
  16. Ravyu
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    Ravyu iPF Novice

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    Yes I had this problem. There is a way which you do not need to restore or anything. After rebooting tethered, do it AGAIN!! Works for me all the time!
  17. andry1234
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    andry1234 iPF Novice

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    What u intend for reboot tethered? I got just white apple logo....
    Anyway it's almost 4 days that the iPad is low battery, I will wait until it doesn't turn on even to show the red battery.

    Thank u
  18. biobunny
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    biobunny iPad Junkie

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    So you do that and then restore the iPad to factory settings using iTunes and rejailbreak (untethered) if you like.
  19. andry1234
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    andry1234 iPF Novice

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    I think it's not my case, my iPad is totally corrupted.... No way to make it recognize from a computer......:(
  20. biobunny
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    biobunny iPad Junkie

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    Can a jailbreaking tool recognize it?

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