GTX 285 Flash Success! <256K Chip changed>

Discussion in 'Mac Pro' started by Macbai, Apr 30, 2010.

  1. Macbai macrumors newbie


    Apr 30, 2010
    hi guys, I have a Galaxy PC GTX 285 and I want to flash to MAC rom.

    Here is my card:

    The old chip is SST25VF512 , I changed to SST25VF020.
    The nvflash tools show can not support SST25VF020,but it works fine.

    I have download the EVGA's GTX 285 rom for MAC and flashed (I think Galaxy GTX 285 is ordinary version, because I can use the ordinary driver in the Windows ) , but in the MAC10.5.8 can not recognize the card.After that I try the Nvidia mac dirver for GTX 285, black screen!

    Who can tell me why? Wrong rom?
  2. MacVidCards Suspended

    Nov 17, 2008
    Hollywood, CA
    Can't tell you a darn thing until you give us some more info.

    1. Which mac Pro are you using?

    2. What messages did you get from Nvflash when you flashed?

    3. With Apple ROM, does the GTX285 work in Windows? DOS?

    4. Can you reflash original ROM and make card work again in Windows & DOS?

    5. What type monitor are you working with? Connected how?

    6. What other GPUs do you have on hand?

    These are the sorts of questions I would like to not, nice if people asking for help cover these bases and save me typing them out.

    If your card has HDMI as shown in photo, that may be a problem, or maybe not. So far I think I am the only person to get a flashed GTX285 to work. A couple other people have tried and turned a couple $400 cards into doorstops. Not a good choice for a "first flash". Enthusiasm is good, but research and articulation are better.
  3. Macbai thread starter macrumors newbie


    Apr 30, 2010
    Detail INFO

    Rominator thanks for your help, here is details

    1.I try not in a Mac Pro , is my PC installed the PC version Mac:apple:. My pc mother board is Intel s5000vxn ,two Xeon 5335 Quad Core CPU, 4GB FB DIM,very similar as 2008 Mac Pro.

    2.Every time I flash the new chip, nvflash program shows ok. I try to restore and backup to several times for sure the replaced chip working normally.

    3.I am not sure the rom is real MAC which I used. I download from this Forums. The file name is evga285m.rom (156KB). But in the Zeus, it is still says a PC ROM. here is the Zeus' info:

    NVIDIA Firmware Update Utility (Version 5.70d6)

    Image Size : 152064 bytes
    Image Type : PC ROM
    Version :
    ~CRC32 : 0A07099C
    OEM String : NVIDIA
    Vendor Name : NVIDIA Corporation
    Product Name : NVIDIA GeForce GTX 285

    Product Revision : Chip Rev
    Device Name : GT200 (05E3h)
    Board ID : C826
    Vendor ID : 10DE
    Device ID : 05E3
    Subsystem Vendor ID : 3842
    Subsystem ID : 1080
    Hierarchy ID : Normal Board
    Sign-On Message : NVIDIA GT200 Bringup

    Image Type : PC ROM
    Version :

    4. I have tried the PC rom and Mac rom, both work fine in the Windows and Dos.

    5.I have a SAMSUNG SyncMaster 2253sw monitor ,only can support 1680*1080. It was connected when I upgrate Nvidia GTX 285 Mac driver.

    6.I have some GPU cards(some borrows from friends):

    a.PC FX 4500
    b.MAC FX4800
    c.MAC HD 4870
    d.GALAXY NV GTX 285
    e. ATI 4350
  4. Cindori macrumors 68040


    Jan 17, 2008

    you are using hackintosh? [​IMG]
  5. MacVidCards Suspended

    Nov 17, 2008
    Hollywood, CA
    I'm gonna guess we have another language barrier issue

    I'm going to use ALL CAPS so you will understand more easily.

    IF YOU AREN'T RUNNING AN EFI MAC, YOU HAVE ABSOLUTELY NO USE WHATSOVER FOR AN EFI ROM !!!!!!! You have successfully wasted both my time and yours.

    Go to a HACKINTOSH forum.

    Everything you have done so far is a 100% COMPLETE AND TOTAL WASTE OF TIME !!!!

  6. Macbai thread starter macrumors newbie


    Apr 30, 2010
    I See ,but still puzzled

    The MAC version card can using in a hackintosh computer or not? As I knew the MAC version card can direct support Windows .

    As you said need a MAC Pro (Real EFI based motherboard), the MAC OS can Driver the EFI Display Card?

    I thought after I flash the card successful, the hackintosh can direct drive the card. Need not install 3rd part driver. I will try a MAC FX4800 in my hacintosh .

    In my working place,there are many Mac Pro, Mac Server,I can find a real MAC Pro test the card.

    I have a MAC but a MacBook and I just have fun with the flashing...

    Thanks, Rominator and Cindori.
  7. MacVidCards Suspended

    Nov 17, 2008
    Hollywood, CA
    OK, i'll try again.

    Sorry if I used lots of technical lingo before.

    You have a HACKINTOSH computer.

    This forum is for MACINTOSH computers.


    When you have questions regarding a MACINTOSH computer, you should ask questions on a MACINTOSH forum.

    When you have questions with a HACKINTOSH, you should ask questions on a HACKINTOSH forum.


    If there is something above that you still can't understand, by all means please let me know.
  8. Macbai thread starter macrumors newbie


    Apr 30, 2010
    hi Rominator, I have confirmed , and I was wrong.

    When I install MAC FX 4800 in my hackintosh, the same situation happened just like my flashed GTX 285.

    I will try in a MAC PRO.:D

    Thanks for your help
  9. Macbai thread starter macrumors newbie


    Apr 30, 2010
    test result : Working Success!

    I have tested the flashed GTX285. Not test the 2nd port because it is HDMI.
    But the DVI works OK. Here is the details:

    MAC PRO : 2008 Quad-Cord XEON 8GB ram
    DISPLAY: PHLIPS 1920 1200
    DISPLAY CARD: NV GTX 285 flashed

    Attached Files:

  10. Macbai thread starter macrumors newbie


    Apr 30, 2010
    Graphic info

    Graphic info

    Attached Files:

  11. g4monsterau macrumors newbie

    May 16, 2010
    GTX 285 rom chip location?

    Hi all,
    Can anyone tell where the rom chip is on an evga 285 GTX PC version?
    Also where do you find a 256k rom chip? Does Mouser have any?

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