Question about jailbreaking and SHSH blobs

Discussion in 'Jailbreaks and iOS Hacks' started by alec6542, Jun 25, 2012.

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  1. alec6542, Jun 25, 2012

    alec6542 macrumors regular

    Joined:
    Jan 16, 2012
    #1
    I have a quick question. I know it is important to have your SHSH blobs saved so you can downgrade your firmware in the event Apple stops signing the firmware for the current jailbreak. My question is: suppose Apple stops signing iOS 5.1.1. Would it still possible to jailbreak an iDevice that has not been upgraded (i.e. it still has iOS 5.1.1 but no SHSH blobs saved)?

    Thanks,
    Alec
     
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  2. dhlizard, Jun 25, 2012

    dhlizard macrumors G4

    dhlizard

    Joined:
    Mar 16, 2009
    Location:
    The Jailbreak Community
    #2
    If you are asking are hashes required to complete a jailbreak of an iDevice already on a firmware ? No, just a jailbreak tool on a computer with Internet access.
     
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  3. Applejuiced, Jun 25, 2012

    Applejuiced macrumors Westmere

    Applejuiced

    Joined:
    Apr 16, 2008
    Location:
    At the iPhone hacks section.
    #3
    Yes, if its still on 5.1.1 for example and you want to JB you can at any time. SHSH blobs are only used when restoring to firmware not signed by Apple any longer. But they're not used when you just JB.
     
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  4. NanoNyrd, Jun 27, 2012

    NanoNyrd macrumors regular

    Joined:
    Dec 1, 2011
    #4
    Yes, you can still jailbreak. But if you mess up, you will need the SHSH blobs to recover, otherwise your only option will be to restore to the newest firmware.

    So save your SHSH blobs now, just in case.

    Of course, if you later get a phone with 5.1.1 and no saved blobs, you can still jailbreak it, just don't mess up :)

    Or use iFaith / redsn0w to read off the SHSH blobs before beginning, if it is an iPhone 4 or older (they cannot do it with a 4S).
     
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