iOS 4.0 Unable to downgrade iOS 4 to 3.1.2 with SHSH Blobs

Discussion in 'iOS Jailbreak & Cydia' started by sonicroxs, Sep 25, 2010.

  1. sonicroxs

    sonicroxs New Member

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    Device:
    2G iPod touch
    Hi,
    I have an 8GB iPod Touch 2G MC model, and I wanted to downgrade it.
    Strangely, my iPod came with 3.1.3, but TinyUmbrella found 3.1.2 SHSH blobs for my device on Cydia... strange?
    So I tried to downgrade.
    I start TSS server, I put my device in DFU, and when the progress bar appears (yay I was so happy) iTunes throws error 28 at me. I also tried downgrading in recovery mode, and normal mode.
    Oh, but for some reason, I can restore to 4.0 with the SHSH blobs I saved, no problem.
    Any reason for this?
  2. hacker123

    hacker123 Banned

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    Device:
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    u cant becoz the shsh are not signed ............
  3. sonicroxs

    sonicroxs New Member

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    Device:
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    Oh. Thanks for the info, I really appreciate it.

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