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can't upgrade JB ipad2 to 5.0.1: error 21

Discussion in 'iPad Hacking' started by leland, Jan 24, 2012.

  1. leland
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    leland iPF Novice

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    Hi all,

    Each time I try to upgrade my JB iPad2 to 5.0.1 I get Error 21 while restoring as part of the upgrade.

    Can anyone help?

    Thus far I've tried:
    -Rebooting/restarting/etc
    -Changing TinyUmbrella so that set Cydia hosts on exit is NOT set
    -Breaking my junction for the backup

    Can anyone help?
  2. Mickey330
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    Mickey330 Administrator Staff Member

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  3. leland
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    leland iPF Novice

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    Tried that and am in DFU mode. But now... "the iPad could not be restored because the firmware file is not compatible"

    AAARGH!!!?!?!

    How the hell do I upgrade to 5.0.1?
  4. leland
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    leland iPF Novice

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    Ok, and now it works... Bizarre. Honestly I don't think I did anything other than plug and unplug the iPad to restart iTunes. God help someone who has to troubleshoot Apple stuff for a living.

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