I should add that 'lsusb' shows the device is:
Bus 001 Device 004: ID 0a5c:21d7 Broadcom Corp. BCM43142 Bluetooth 4.0
The USB vendor:device ID is 0a5c:21d7
and I see in the github repository the file:
brcm/BCM43142A0-0a5c-21d7.hcd
so you should be able to install it using:
sudo wget -O /lib/firmware/brcm/BCM.hcd https://github.com/winterheart/broadcom-bt-firmware/blob/master/brcm/BCM43142A0-0a5c-21d7.hcd
After a reboot the Bluetooth device should work.
I should add that 'lsusb' shows the device is:
Bus 001 Device 004: ID 0a5c:21d7 Broadcom Corp. BCM43142 Bluetooth 4.0
The USB vendor:device ID is 0a5c:21d7
and I see in the github repository the file:
brcm/BCM43142A0 -0a5c-21d7. hcd
so you should be able to install it using:
sudo wget -O /lib/firmware/ brcm/BCM. hcd https:/ /github. com/winterheart /broadcom- bt-firmware/ blob/master/ brcm/BCM43142A0 -0a5c-21d7. hcd
After a reboot the Bluetooth device should work.