# on
modprobe cfg80211
modprobe brcmutil
modprobe brcmfmac

# off
/sbin/ifconfig wlan0 down
/bin/systemctl stop bluetooth
/bin/systemctl stop hciuart
rmmod brcmfmac
rmmod brcmutil
rmmod cfg80211

# cat /etc/modprobe.d/wifi-blacklist.conf
blacklist brcmfmac
blacklist brcmutil
blacklist cfg80211
blacklist rfkill
blacklist bnep
blacklist hci_uart
blacklist btbcm
blacklist bluetooth
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