HOW TO - Resolve iTunes Unknown Error 3194

Discussion in 'iPhone Hacking Tutorials & Guides' started by f4780y, Sep 3, 2011.

  1. f4780y

    f4780y Super Moderator Staff Member

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    Recently this problem has started to crop up a lot with users for a variety of reasons. The good news is it can be easily resolved.

    Background
    When you restore a stock or custom firmware on any Apple device from iPhone3GS onwards, the process is verified with Apple using SHSH Blobs.
    Whenever iTunes is requesting your blobs from the Apple signing servers you see this message in the status bar in iTunes...

    [​IMG]

    If iTunes does not receive the reply it was expecting, it can throw an unexpected error which usually says:

    "The iPhone could not be restored. An unknown error occurred (3194)"

    This problem is usually caused because iTunes is not actually talking to the Apple signing servers to get SHSH blobs, but is more likely pointed towards Cydia. This is usually because you have previously used TinyUmbrella to store your SHSH Blobs or you edited your hosts file manually to point to Cydia.

    Solution
    By default, TU will set your hosts file to point to Cydia when it exits. You can tell it to point you back to Apple servers easily. If you don't already have TU, you can download it from - The Firmware Umbrella - TinyUmbrella

    Start TinyUmbrella, switch to the "Advanced" tab, and UNTICK the option which says "Set hosts to Cydia on exit".

    You can see the option, which is the second check box in the list, in the following screenshot:

    [​IMG]

    Once you have unticked the option you are done. Just exit TU and your hosts file will be back to normal and pointing towards Apple. This is the best way to leave it. If you need to restore using TU in the future, just press it's "Start TSS Server" button. You never need to change the hosts option again. Just leave it switched off and TU does the rest.

    If you don't want to use TinyUmbrella to resolve this problem, then you can manually edit your hosts file. You must REMOVE any of the lines in it which point to gs.apple.com. Just delete them altogether.

    On Windows the hosts file can be found in: C:\Windows\System32\drivers\etc\hosts
    On OSX the hosts file lives in /private/etc/hosts

    That should resolve your iTunes error 3194.
     
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  2. Darkstar2007

    Darkstar2007 Administrator Staff Member

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    I had to refer somebody to this tutorial earlier. Except I found it on ipadforums :D! It worked great for them! Great job man! :D
     
    Last edited: Sep 3, 2011
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  3. iGraves

    iGraves New Member

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    That would be me! Haha. I had to manually edit my hosts file for it work for me. :)
     
  4. khanjada

    khanjada New Member

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    hi ,,, i m not sleeping last 2 night ,,,bcoz i m in big prb ,, I have a iphone 4g, version 4.3 i update it by 4.3.3 and 4.3.5 and then my device goes to recovery mode and also getting 3194 error, when i want to restore it. tinyumbrella give me a message ....u r too late something like that ,,anybody rescue me from my problem...pls...pls..pls...
     
  5. jntdroid

    jntdroid Member

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    Thank you for this - just bought an iphone 4 (VZW) off of craigslist and couldn't update to 4.2.10 - clearly he had tweaked it without telling me... anyway, this appears to have worked. At least it's restoring now, and hasn't given me the 3194 error anyway. Thanks again...

    edit: finished up perfectly, all's good now
     
    Last edited: Oct 10, 2011
  6. soccerislife8

    soccerislife8 New Member

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    If this solution does not work for you, I found a few more posted ***LINK REMOVED***. Hope this can help some people!
     
    Last edited by a moderator: Jan 21, 2012
  7. taimur_3

    taimur_3 New Member

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    I am interested in updating my iphone 3gs and facing the problem of 3194 error. While following your tutorial, I am experiencing a problem. i.e I am seeing the attached screen shot being unable to uncheck the "Set Hosts" option. Please help $tiny umbrella.jpg
     
  8. willerz2

    willerz2 Super Moderator Staff Member

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    Remove any Apple hosts from your host file, and delete the host.umbrella file in the same directory as your host file. Then flush your DNS and retry.
     
  9. taimur_3

    taimur_3 New Member

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    Thank you. I'll try that
     
  10. fufighter

    fufighter New Member

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    Hello, a friend is receiving this error whentrying to unlock a 3gs, using Sn0wbreeze 0.9.14 and iOS 6.1.3, he already build the custom IPSW and now just is need to restore the iphone with it. He look into the "hosts" fodler and there is nothing there, Never used tiny umbrella or something like that in the past, so he is stuck in the last step of the procedure. I think the main problem is that the computer is running Win 7 64 bits =S . iTunes was the 11.05 (64 bits) then uninstalled and went one version early just to be sure, doesn't work neither. Could anybody please help ?

    So far I read in internet very different statements, it seems the last resource is tiny umbrella, heI already have it, probably will try it after school, any advice?

    Thanks!!
     
    Last edited: Jan 16, 2014
  11. willerz2

    willerz2 Super Moderator Staff Member

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    Are you using Sn0wBreeze or RedSn0w. You said Sn0wBreeze, but the version number coincides with RedSn0w.
     
  12. fufighter

    fufighter New Member

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    I follow a tutorial where they stated that was sn0wbreeze, I downloaded this file:


    • sn0wbreeze v2.9.14 (For iOS 3.1.3, 3.2.x, 4.0.x, 4.1, 4.2.1 to 4.2.8, 4.3 to 4.3.3, 4.4.3, 4.4.4, 5.0.1, 5.0.2, 5.1.1, 5.2, 6.0.x, 6.1, 6.1.2, 6.1.3)
    I dont know if I can link the source

    The program was black all black, with a snow flea and you select the options, with arrows in the bottom to confirm the steps.
     
  13. willerz2

    willerz2 Super Moderator Staff Member

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    What does the error specifically say.
     
  14. fufighter

    fufighter New Member

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    I get a pop-up exatly like this:
    [​IMG]

    I tried the basic: the host file, but there was no references to apple, in fact there was nothing without the "#"
    I tried with 11.05 itunes (64bits) and then I roll back one version just to be sure, but the error remains.

    Thanks for your fast responses willerz2
     

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  15. azee mehr

    azee mehr New Member

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    Hi All,
    I was on iphone, 16gb, 5.1.1 factory unlock. My iphone was doing like a charm. I tried to update my all cydia apps alltogetter. AND then my iphone booted. Now it stucked at apple logo.

    I tried to restore with itunes with 5.1.1 - 7.1.2 - 8.1.2 - 8.2b2 but every time i got itunes error 3194 on three computers even. [​IMG]

    I want to have my jailbroken iphone back on which ever ios possible. i have also played with windows hosts file as you told here but of no avail.

    Please help.

     

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