1 55_net.cfg Place in /etc/cloud/cloud.cfg.d/ on the SD card and edit before first boot to preconfigure a wifi network. see comments in file 1 rtl_bt/* Bluetooth firmware files, place in /usr/lib/firmware/rtl_bt/. Also install bluez to use via bluetoothctl Requires a reboot 1 mqpro-status-led.service Place in /etc/systemd/system/, run sudo systemctl daemon-reload then sudo systemctl enable --now mqpro-status-led.service