Flashing HD7850 pitcairn help needed

Discussion in 'Mac Pro' started by MacNiceGadgets, Apr 21, 2019.

  1. MacNiceGadgets macrumors newbie

    Apr 21, 2019
    Hi all!

    Could anyone here advise me how to modify HD7950's hamachi framebuffers to Futomaki framebuffers after using netkas' bundle script. Without modifying its framebuffers to Futomaki, my mac pro stars up with apple boot screen and the display goes black right before the desktop comes up.
    Your help would be highly appreciated. Thanks a lot in advance!
  2. h9826790 macrumors G5


    Apr 3, 2014
    Hong Kong
    Impossible, you better flash the original firmware back in, and forget about the boot screen.
  3. mrnobody macrumors newbie


    Apr 10, 2019
    "Subject: HD7850" yet you ask "how to modify HD7950's".
    Which is it? I would guess the 'flashability" highly depends on the card's brand also.

    Don't know who flashed it, but this is from my System Information:
    AMD Radeon HD 7850:
    Name: ATY,Futomaki
    Type: Display Controller
    Driver Installed: Yes
    MSI: Yes
    Bus: PCI
    Slot: Slot-1
    Vendor ID: 0x1002
    Device ID: 0x6819
    Subsystem Vendor ID: 0x1458
    Subsystem ID: 0x2553
    Revision ID: 0x0000
    Link Width: x16
    Link Speed: 2.5 GT/s

    Running two displays from the mDP ports, no issues with boot screen, etc.
    Card is a Gigabyte Windforce 2GB like this one:
  4. MacNiceGadgets thread starter macrumors newbie

    Apr 21, 2019
    Thanks for your reply. Yes, I meant like you mentioned; modifying my hd7850 rom using hd7950’s script. My hd7850 is Sapphire’s 2gb model, but could you possibly share with your rom so that I can study which part of rom I need to replace from hamachi to futomaki with. Thanks again.

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3 April 21, 2019