Mac Pro 4.1 with Nvidia GTX 660 not flashed and want to update software from 4.1 to 5.1

Discussion in 'Mac Pro' started by serrano071, Oct 29, 2016.

  1. serrano071 macrumors newbie


    Oct 29, 2016
    I have a Mac Pro 4.1 early 2009 with a Graphic Card Nvidia GTX 660 2GB not flashed, so I don´t see the boot screen and I don´t have the original card.

    My question is, I have the 4.1 software and I want to update to 5.1 software, can I do without the original card?

    Mac Pro 4.1 (early 2009)
    2,93GHz Quad-Core Intel Xeon
    8GB 1066mhz DDR3
    Nvidia GeoForce GTX 660 2GB

    Thank you very much
  2. Synchro3 macrumors 68000


    Jan 12, 2014
    No, you need an EFI card for the Mac Pro 4,1 -> 5,1 firmware upgrade.
  3. h9826790 macrumors G3


    Apr 3, 2014
    Hong Kong
    You can do it without the original graphic card. HOWEVER, you need to install another graphic card that has the Mac EFi.

    Mac EFI is the actual requirement. Original graphic card is not.

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