10 Replies Latest reply: Oct 20, 2010 10:37 AM by b noir
belinda2 Level 1 (0 points)
i need help as i would like to upgrade to itunes 10. I have tried absolutely everything such as restarting computer and resetting tools on internet.

it installs perfectly but once it has finished it comes up with an error message saying unknown publisher. this application has a n invalid signature

please help as i need to upgrade my ipod touch version to 4.1 as well as itunes 10.

acer, Windows Vista
  • b noir Level 9 (72,060 points)
    I see you're from Australia, belinda ... by any chance, are you connecting to the internet via a wireless broadband provider, using one of those USB dongle thingies?
  • belinda2 Level 1 (0 points)
    yes i'm using a broadband internet modem and its connected to a wireless router, i'm not using usb internet.

    i have tried so many times installing itunes 10 but it just keeps coming up with invalid digital signature.

    Message was edited by: belinda2

    Message was edited by: belinda2
  • b noir Level 9 (72,060 points)
    i'm using a broadband internet modem and its connected to a wireless router


    Okay, that rules out one possible cause of the installers getting damaged during the download. Starting to check through other ways past this for you.

    What web browser have you been using to download the installer? Does it make any difference if you use Firefox instead of IE, or vice versa?
  • belinda2 Level 1 (0 points)
    Yes, I use windows internet explorer. Do you think I should use mozilla firefox and see if it works?
  • b noir Level 9 (72,060 points)
    Yes, definitely worth a try ... Firefox handles network connections a bit differently from IE and most other browsers. So if IE is downloading the installers damaged, quite often Firefox can download a working one. (Every now and then it works round the other way ... Firefox is grumpy, but IE or another browser gets the business done.)
  • belinda2 Level 1 (0 points)
    I've tried installing mozilla firefox and that doesnt even work. It says that the file is corrupt.

    I have no luck at all.
  • belinda2 Level 1 (0 points)
    i saw that i had a version of firefox on my computer already. It's doing the same thing with mozilla firefox as well.

    What else can i do?

    Should I just get the itunes setup folder from a person that has got it already?
  • b noir Level 9 (72,060 points)
    Should I just get the itunes setup folder from a person that has got it already?


    Yes, that usually works. (So long as we can get an undamaged installer onto the PC with one of these, it will usually install fine.)

    Another thing that is worth a try is seeing if you can connect to a different wireless network, and downloading the installer while you're connected to the internet that way. (The wireless router being grumpy is a common cause of this sort of thing, so by connecting to a different network you're taking the grumpy router out of the equation.)
  • belinda2 Level 1 (0 points)
    YAAAY I've just successfully installed itunes 10 thanks for all your help and time I appreciate all of it, b noir. I will definitely rate you so you can be the best because you certainly deserve it.

    All the best. Thanks once again.
  • b noir Level 9 (72,060 points)
    excellent news, bel. Glad you're up and running again.