Can not enable IGPU headless i7 10700

Hello, I have a built:

- Cpu: i7 10700 non K.

- Main MSI B560m Mortar non wifi.

- Graphic card: amd rx 470 4gb.

- Mac OS: 11.6 Big Sur with smbios 20,1.

I follow the guide from Dortania for Comet Lake, but can not make headless igpu work, it work only with the code for drive a display.

Thank you!

https://preview.redd.it/j4o47c5cwcq71.png?width=1396&format=png&auto=webp&s=8ff8292b28b9ba6ea5c95666ee83e53b604d22e5