2009-2010 Mac Pro Firmware Tool Error: This program requires Internet Access

Discussion in 'Mac Pro' started by Okta, Mar 23, 2018.

  1. Okta macrumors newbie

    Apr 20, 2014
    Hey there everyone,

    I'm trying to flash my 2009 4,1 to 5,1 but I keep running into this issue with the firmware tool. It says

    'This program requires Internet Access. Please connect your Mac Pro to the Internet and Try Again'.

    I am connected to the internet. I read that the typical fix was to download the 1.5 2010 Firmware from here: https://support.apple.com/kb/DL1321 and then mount it, but don't click the .pkg. I did that exact process and I get the same error.

    Any ideas on how to help?

  2. Okta thread starter macrumors newbie

    Apr 20, 2014
  3. ActionableMango macrumors G3


    Sep 21, 2010
    No, don't mount it. Just put the file on the desktop.

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