iOS 4.0 Restoring Possible without SHSH?

Discussion in 'iOS Jailbreak & Cydia' started by LazerNarwhal, Aug 28, 2010.

  1. LazerNarwhal

    LazerNarwhal Member

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    So I accidentally upgraded to 4.0.2, and I've been searching all over the the forums for restoring to 4.0 without SHSH, and they all say it's not possible. So I downloaded the 4.0 firmware and shift+restored, and to my amazement, it worked!
    Does anyone know how this is possible?

    BTW, I edited my hosts file with that gs.apple.com thing
    and I have an iPod touch 2nd gen 8GB MC model.
  2. xXrkidXx

    xXrkidXx Well-Known Member

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    2nd Generation's don't use SHSH blob checks. You can restore to any firmware you like.

    CodeBlue?
  3. LazerNarwhal

    LazerNarwhal Member

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    I thought that iOS 4 included some SHSH blob checks?
  4. iP0dT0uch1

    iP0dT0uch1 Member

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    No harm in at least trying to downgrade. It should work though...
  5. LazerNarwhal

    LazerNarwhal Member

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    Well, the first time, it didn't work. Maybe I downloaded the wrong one.
  6. iP0dT0uch1

    iP0dT0uch1 Member

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    If you really want your jailbreak back, you could downgrade to 3.1.3 or 3.1.2
  7. xXrkidXx

    xXrkidXx Well-Known Member

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    Yea.. It's supposed to. I have heard of this happening today with an iPhone 3G.. Apple's signing server is messed up?

    Have you EVER been jailbroken?
  8. XxRedRumxX

    XxRedRumxX Well-Known Member

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    Well thats not the case for me. I had to use TinyUmbrella to get my shsh's to downgrade from OS 4.0 to 3.1.3 because iTunes wouldn't let me otherwise.
  9. xXrkidXx

    xXrkidXx Well-Known Member

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    Huh... Im talking to this guy who claims he downgraded his 3G today.. Without blobs and he seems more likely to be serious. It might be the day for downgrades. Everybody go try it now
  10. iDestiny

    iDestiny Well-Known Member

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    If you've ever been jailbroken recently, then Cydia has grabbed the blobs.
    It's always best to try to downgrade, because it may have saved anyway.

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