Having disabled a BCM43142A0 Bluetooth adapter, how do I remove the proprietary kernel blob?

Question

I've successfully disabled my laptop's internal Broadcom Bluetooth adapter using this procedure. All is now working fine with my replacement (non-Broadcom) external Bluetooth adapter. However, I think the now-disabled adapter was probably being driven by a proprietary kernel blob that I installed a long time ago with b43-fwcutter. Can I safely remove that blob, and if so how, please?

Answer 1

I suggest that you blacklist bcma.

sudo -i
echo "blacklist bcma"  >>  /etc/modprobe.d/blacklist.conf
modprobe -r bcma
exit

Now check:

sudo lshw -C network

Your Broadcom wireless device should now appear as UNCLAIMED.

EDIT: Please try:

sudo modprobe -r bcma
sudo modprobe -r cfg80211
sudo update-initramfs -u

Reboot.