Broadcom BT 20702b0 keep disappearing

[Monyx]

After updating OC 0.7.8 and Big Sur BT keeps disappearing or turning off and can't be switched on. Usually works for little while after a cold power on, but after that neither option + shift "Reset the Bluetoth Module" reboot brings it back, nor does the following .sh script. For a lot of time in MacOS & Win10 even tho system is reporting BT is off (system info BT reports No information found) magic mouse still works but without any gestures/scroll just the left and right contextual button. Wifi on the same card works reliably the whole time.

Interestingly if I boot into Win10 (using BIOS boot volume selector not OC) problem also appears there. I used old apple drivers from Bootcamp in Win10 so I have properly scrolling magic mouse functions in Win10 when it does work.
So does that eliminate all the OC kext issues: I'm using latest AirportBrcmFixup 2.1.4 + BrcmPatchRAM 2.6.1 with RAM3 for 11.6.4.


#!/usr/bin/env bash

pgrep audio | xargs sudo kill
pgrep bluetooth | xargs sudo kill

sudo launchctl list | grep -i blue | awk '{ print }' | xargs sudo launchctl stop
sudo launchctl list | grep -i blue | awk '{ print }' | xargs sudo launchctl start
sudo launchctl list | grep -i audio | awk '{ print }' | xargs sudo launchctl stop
sudo launchctl list | grep -i audio | awk '{ print }' | xargs sudo launchctl start

 

[Monyx]

Solved: I pull out the PCIe card noted I have BCM94331CD, according to Dortania guide is no longer supported in BigSur. Ordered a Fenvi T919 BCM94360. Are all these Apple BCM units - do I even need all the kexts I read they work OOB?

 

[Feartech]

Solved: I pull out the PCIe card noted I have BCM94331CD, according to Dortania guide is no longer supported in BigSur. Ordered a Fenvi T919 BCM94360. Are all these Apple BCM units - do I even need all the kexts I read they work OOB?

no kexts required but you will need to do this correctly:

The New Beginner's Guide to USB Port Configuration

Important Update: June 2023 From Big Sur 11.3 on the built-in OpenCore XhciPortLimit quirk no-longer worked as described. This became a known "bug", though in reality it was Apple changing their internal code, making a simple "peek and poke" to keep it operating, a difficult task. However, with...

www.tonymacx86.com

 

[Monyx]

Despite what the Dortania guide says - since removing & inserting the PCIe with same BCM94331CD BT module I've now had 3 days of 100% reliable BT operation. The other thing that changed in that time frame was MacOS security update to 11.6.5. Looks like that $60 BCM94360 I just ordered mightn't be needed at all!