Thanks for the reply not tested the new bois because the Mac not with me right now ,am message you get a chance to flash your rom ,am followed the nekas forum instruction,guide me what is my mistake i think need to change the device instead of 697A to 679AI wouldn't call it "successfully", as the card is clearly not flashed. No boot screen, generic type in description.
What is your DeviceID? See picture on where to find it. Assuming your DeviceID is 679a (Sapphire Radeon 7950 3GB) the attached EFI ROM I made from your BIOS should handle it.
View attachment 899881
"BIOS" not "bois" ?Thanks for the reply not tested the new bois because the Mac not with me right now ,am message you get a chance to flash your rom ,am followed the nekas forum instruction,guide me what is my mistake i think need to change the device instead of 697A to 679A
PCI\VEN_1002&DEV_679A&SUBSYS_E207174B&REV_00
Am run the same script as mentioned on netkas forum
./makerom.sh --efifile=7950mac.efi --romfile=efiromheader.rom --originalrom=cardname.rom --devid=697a
My rom version on Macpro was MP51.007F.B03,if the efi flash was success can be able to install mojave with EFI boot screen.
Quite obviously you need to properly adjust the variables when converting the BIOS. But I have already done it for you.Thanks for the reply not tested the new bois because the Mac not with me right now ,am message you get a chance to flash your rom ,am followed the nekas forum instruction,guide me what is my mistake i think need to change the device instead of 697A to 679A
Thank you very much hwojtek my mistake was am input wrong device id 697A,do it as first timeQuite obviously you need to properly adjust the variables when converting the BIOS. But I have already done it for you.
Mojave will run on your Mac.
Thanks hwojtek am used your Graphics Bios successfully flashed & get boot screen working perfectlyI wouldn't call it "successfully", as the card is clearly not flashed. No boot screen, generic type in description.
What is your DeviceID? See picture on where to find it. Assuming your DeviceID is 679a (Sapphire Radeon 7950 3GB) the attached EFI ROM I made from your BIOS should handle it.
View attachment 899881
If I am not mistaken the HDMI driver came in Mojave.Thanks hwojtek am used your Graphics Bios successfully flashed & get boot screen working perfectly
tested on High seira & Mojave ,PCIe Fan not working ,checked for any bend on pin no issues ,other problem was only DVI Port was working HDMI & Display Port not working.Can get HDMI display if we add driver kext files .
Mojave clean install also has no hdmi & display port signal ,DVI working Perfectly ,can inject kext to work HDMI display,If I am not mistaken the HDMI driver came in Mojave.
You may try to follow the exact steps in this post.Hi. I have the following downloaded cardname.rom using the ATIFlash_293. And I have the same problem after flashing to cardname.rom.efi. No boot up screen on my 4,1 flashed to 5,1 Mac Pro. I'm using the Sapphire HD 7950 as in the below link from techpowerup.com.
Sapphire HD 7950 Specs
AMD Tahiti, 810 MHz, 1792 Cores, 112 TMUs, 32 ROPs, 3072 MB GDDR5, 1250 MHz, 384 bitwww.techpowerup.com
Really appreciate if someone could help me with the Mac ROM. Thank you in advance.
HDMI or Display port?It got worse after I flashed it. I couldn't even get the screen back. *Cold sweat*
Attached was what I did. I also attach my config information.Now I've gone back entirely to a working Windows ROM and I get back the display without the Apple logo screen.
Any clues appreciated. Thanks.
HDMI or Display port?
It seems you did it right. If you get absolutely nothing from HDMI, then 99% you got it right. But just your card doesn't compatible to the Mac EFI. If you use Display Port, you should see the boot screen straight away.
DVI should work for most cards (e.g. those card that has single DVI port).I've been told that DVI should work but still no signal on DVI
Lol looks like I’ve been sold dreams by the ebayer, he told me easily flashable to Mac edition. Silly me bought it thinking it’s sapphire 7950 so will definitely work ?DVI should work for most cards (e.g. those card that has single DVI port).
In your case, you can simply setup remote control (e.g. via your mobile phone, by using Google Remote Desktop), then you will able to check if your card is actually flashed properly even nothing displayed.
But TBH, from your description, that match the symptom of "create Mac EFI ROM correctly, flash correctly, but the Mac EFI UGA doesn't fit your card's port layout).
Hi can I check, I have a Powercooler PCS+ HD7950 3GB, which I flashed.Highly likely due to your card's port layout is too far away from the reference card.
Try another port, if none of them work, then nothing you can do.
HDMI usually won't work, you better try DP.