Did you try to update for Monterey BETA 7?
Once I changed Misc -> Securebootmodel -> j160 then downloaded updater,
before reboot, I changed "j160" to "Disabled" or "x86legacy".
But I couldn't update.
There is still "Mackintosh HD" on Boot Picker.
I select it many times, it's fail...
To make Strong WORK STAION for making movie, photos,
I made a new ryzentosh as below:
MB: GIGABYTE Aorus Master Rev 1.2
CPU: Ryzen 5950x
CPU Cooler: Corsair iCUE H150i RGB PRO XT
RAM: 64MB Patriot Memory Viper4 Series DDR4 3200MHz PC4-25600 16GB x 2, TEAM GROUP VULCAN DDR4 3200MHz 16GB x2...
EFI can't upload on Profile posts.
In the near future I will post thread on success stories.
Now I am so busy to make LIVE film.
So, DAW? I have LOGIC PRO, but I don't use it for around year.
My audio interface is Apogee Duet USB.
My Duet USB is maybe broken input, now...
My 6900XT is PowerColor Red Devil AMD Radeon RX 6900XT 16GB GDDR6 AXRX 6900XT 16GBD6-3DHE,
the price is about US$1,744(190,000yen) in Japan.
The Device ID is 0x73bf.
OpenCL is 120151, Metal is 194190 on Geekbench5.