To fix, do
wget https://github.com/winterheart/broadcom-bt-firmware/raw/master/brcm/BCM20703A1-0a5c-6410.hcdsudo cp BCM20703A1-0a5c-6410.hcd /lib/firmware/brcm/BCM-0a5c-6410.hcd↧
Answer by Jeremy31 for Dell XPS 15 9550 - Bluetooth will not connect to anything
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