Making an AMD RX580 2048SP Graphics Card Work on Hackintosh

[commonworking]

Hello everyone.

Bootloader OC 0.9.9. macOS 13.6.6

I have modified the bios for the RX580 2048SP according to this guide. Everything is fine, now the entire 8 GB memory is displayed. But in macOS, only the 59.88 Hz refresh rate is available. Before that, Samsung RX560 4 GB was installed and 75 Hz is available there.
On Windows, this problem is solved by installing AMDdriverpatch.
Maybe I did something wrong. The attachment contains the original BIOS of the video card.

Has anyone come across this?

 

[commonworking]

I still can't get a flashed RX580 2048SP with a 75 Hz refresh rate to work.
I can't determine if this is a BIOS or Hack settings issue.

 

[commonworking]

And I also wanted to clarify one more thing. The overlock suggests replacing ellesmere with polaris20.

But gpu-z still displays ellesmere.