Public bug reported:

A firmware for embedded bluetooth adapter on Broadcom 4350 is missing.
Chip is provided as part of DW1820A/DW1830A on Dell XPS 2016 13/15 and probably 
other machines.
More info at: https://wiki.archlinux.org/index.php/Dell_XPS_13_(2016)#Bluetooth

Device IDs:
* 0a5c:6412
* BCM4350C5
* BCM2045A0

Workaround:
$ wget -c 
http://downloads.dell.com/FOLDER03272920M/1/9350_Network_Driver_XMJK7_WN32_12.0.1.720_A00.EXE
$ 7z e 9350_Network_Driver_XMJK7_WN32_12.0.1.720_A00.EXE 
Win32/BCM4350C5_003.006.007.0095.1703.hex
$ hex2hcd BCM4350C5_003.006.007.0095.1703.hex
$ sudo mv -vf BCM4350C5_003.006.007.0095.1703.hcd 
/lib/firmware/brcm/BCM-0a5c-6412.hcd
$ sudo modprobe -r btusb
$ sudo modprobe btusb

P.S.:
Same issue exists for Broadcom 4352 with IDs BCM20702A0/0a5c:216f
More info at: http://tech.sybreon.com/2015/03/15/xps13-9343-ubuntu-linux/

** Affects: linux-firmware (Ubuntu)
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1599154

Title:
  Missing bluetooth firmware for Broadcom BCM4350 (Dell XPS 2016 13/15)

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