HELP! Big Sur with WiFi, but no Bluetooth? Can't map USB.

Hey all.

I do have a working hackintosh with BigSur (H170N-Wifi / i5-7400 / DW1560 / NVMe Evo). Using Opencore lastest version (0.6.8). I'm waiting for a R9 380 to arrive, so using iGPU for now.

My main problem, as a MagicMouse2 and Airpods user, is the lack of bluetooth. I can see the device, and can see the Magic Keyboard (which is connected with cable), and I can see the Airpods. But I can't connect to any of them, and I can't see the magic mouse. WiFi works fine (it's on the same board).

I've seen that USB Mapping should fix the issue, so I did. Tried with Hackintool, tried with USBMap CLI tool, and tried manually using IORegistryExplorer. Created the Kext, added to my config.plist file. I can't see any SSXX ports (I have 6x USB ports, they all are 3.0), but I proceeded anyway.

Whenever I reboot with the new kexts, I can't see the changes in Hackintool: they still show old (deleted) ports, and port types are still wrong (I'm assuming the problem most likely is that the WiFi/BT port is set as USB3.0 when it should be "Internal").

So I still don't have bluetooth, and the main way that I've found that should fix it is ineffective.

I do have all of the necessary patches (AirportBrmcFixUp, BrmcBluetoothInjector, BrmcFirmwareData, BrmcRAM3 - all in this specific order). I tried to inject my USBMap.kext right before these 4 kexts.

Any ideas are very much appreciated, I've spent the last week trying everything I can imagine, and nothing.

Thanks!