- Joined
- Nov 20, 2020
- Messages
- 2
After countless hours of trying, fixing and tweaking the EFI, I was finally able to install the latest macOS Big Sur.
I have attached the EFI.
the only thing you need to do is to add your own MLB, SystemSerialNumber and SystemUUID, I would advise to use the SMBIOS iMacPro1,1 to generate those serials... I had issues with other SMBIOS.
With that EFi, I was able to install Big Sur but I had 2 issues
the first one was that after rebooting for the first time Big Sur after the install, the monitor would stay black....
The fix is in the BIOS, you have to disable the Serial Port...
The second issue was that the Apple ID was not working. "Cannot communicate with the server" Error... Since I use Photos and iCloud I needed this to work...
To fix this you need to make your ethernet card "builtin"
you have all the information on how to do it here:
https://dortania.github.io/OpenCore-Post-Install/universal/iservices.html#generate-a-new-serial
don't bother checking your serial number it will work even though your serial is not recognized by Apple.
The most important is to make your Ethernet card "Built-in"
The EFI attached already has ssd-rmne.aml in the ACPI folder and NullEthernet.kext in the Kexts folder.
They have been disabled, you can just re-enable them and add your Ethernet MAC address in the ROM field and add your PCI Root in Device Property
such as below (address for the B450 Tomahawk Max) use the one given by Hackintosh tool for your motherboard.(see link above)
The B450 tomahawk does not have Wifi so no idea if Wifi will work with your motherboard.
Before that I had Catalina installed, and it has never been perfect, the OS seemed sluggish, the mouse was laggy...
With that Big Sur installation, everything works very well, no more issue with the mouse and the all experience is much better.
I have attached the EFI.
the only thing you need to do is to add your own MLB, SystemSerialNumber and SystemUUID, I would advise to use the SMBIOS iMacPro1,1 to generate those serials... I had issues with other SMBIOS.
With that EFi, I was able to install Big Sur but I had 2 issues
the first one was that after rebooting for the first time Big Sur after the install, the monitor would stay black....
The fix is in the BIOS, you have to disable the Serial Port...
The second issue was that the Apple ID was not working. "Cannot communicate with the server" Error... Since I use Photos and iCloud I needed this to work...
To fix this you need to make your ethernet card "builtin"
you have all the information on how to do it here:
https://dortania.github.io/OpenCore-Post-Install/universal/iservices.html#generate-a-new-serial
don't bother checking your serial number it will work even though your serial is not recognized by Apple.
The most important is to make your Ethernet card "Built-in"
The EFI attached already has ssd-rmne.aml in the ACPI folder and NullEthernet.kext in the Kexts folder.
They have been disabled, you can just re-enable them and add your Ethernet MAC address in the ROM field and add your PCI Root in Device Property
such as below (address for the B450 Tomahawk Max) use the one given by Hackintosh tool for your motherboard.(see link above)
The B450 tomahawk does not have Wifi so no idea if Wifi will work with your motherboard.
Before that I had Catalina installed, and it has never been perfect, the OS seemed sluggish, the mouse was laggy...
With that Big Sur installation, everything works very well, no more issue with the mouse and the all experience is much better.
