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Thread: trying to upgrade from 3.1 to 4.0

  1. #1
    Default trying to upgrade from 3.1 to 4.0
    i downloaded the 4.0 ispw and i click shift restore and it gives me an error 3194 i also tried shift update and i get a diff error any help

  2. #2
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    Need SHSHs for 4.0. If you have a 3G then you can go down to 3.1.x. I believe Apple is still signing 4.0.1 so you can go to 4.0.1 if youd like.

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    juan334 (2010-08-17)

  4. #3
    ok thanks i will try 4.0.1

  5. #4
    How do you get an SHSH for 4.0 or 4.0.1 if you've never installed 4.x on the 3GS? I get error 3194 also using 4.0.1 firmware download going from 3.1.2 on phone that never has had 4.x on it.

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    You dont need to be on a certain firmware to get the SHSHs for it.

    When upgrading to 4.0.1, be sure to put phone in DFU mode first.

    Use stock 4.0.1 fw not custom.
    Last edited by i.Annie; 2010-08-20 at 02:16 AM. Reason: Automerged Doublepost

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