dmesg | grep -i bluetooth | grep -i firmware # Shows Bluetooth firmware issues

Found missing brcm/BCM20702A1-413c-8197.hcd

According to https://github.com/winterheart/broadcom-bt-firmware/blob/master/DEVICES.md the device is
Dell DW380 Nancy Blakes standalone (Dell Wireless 380 Bluetooth 4.0 Module)

lsusb -v | grep -i bluetooth
Bus 001 Device 003: ID 413c:8197 Dell Computer Corp. BCM20702A0 Bluetooth Module
  idProduct          0x8197 BCM20702A0 Bluetooth Module

Get the package from GitHub repo and install it.

https://github.com/winterheart/broadcom-bt-firmware