Smashed my phone - need a little clarification on SHSH blobs

Discussion in 'Jailbreaks and iOS Hacks' started by w.watts, Sep 26, 2010.

  1. w.watts macrumors newbie

    Joined:
    Jun 26, 2010
    #1
    Ok so i shattered the display on my iPhone 4... got a replacement from apple for the $199 deal.

    From what I understand the SHSH blobs are device specific correct? So even though I "made my life easier" it's not possible to downgrade to 4.0.1 via Tinyumbrella to my old blobs since the entire device in new. Stuck till the new JB is released for 4.1. right?

    Just making sure I understand this correctly. Thanks for your help guys!
     
  2. grapes911 Moderator emeritus

    grapes911

    Joined:
    Jul 28, 2003
    Location:
    Citizens Bank Park
    #2
    You are correct, your old blobs won't work. You'll need to wait until the 4.1 jailbreak, whenever that is.
     
  3. w.watts thread starter macrumors newbie

    Joined:
    Jun 26, 2010
    #3
    ******... thanks for the help though haha!

    I'm surprised there's no one working on some sort of blob generator that would work in the same fashion as a keygen. Idk.. I'm not well informed on what the SHSH's actually are so maybe it's not a feasible solution.
     
  4. grapes911 Moderator emeritus

    grapes911

    Joined:
    Jul 28, 2003
    Location:
    Citizens Bank Park
    #4
    You would need to know the algorithm Apple uses to generate them. I'm sure it's complicated.
     
  5. Cinemagic macrumors 6502

    Joined:
    Sep 26, 2007
    #5
    If you could crack that algorithm you'd either be awfully rich or kidnapped by the NSA and forced to work for them.
     
  6. thelatinist macrumors 603

    thelatinist

    Joined:
    Aug 15, 2009
    Location:
    Connecticut, USA
    #6
    They are a very strong RSA-encrypted hash. Without knowing Apple's private signature key, it would take tens or hundreds of years to brute-force a single signature hash. Don't think nobody has thought of this; it's simply not practicable.
     
  7. Shanewilliams macrumors 6502a

    Joined:
    Apr 3, 2010
    #7
    Yep, youre stuck! Hopefully it wont be to much longer of a wait!
     

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