/usr/lib/firmwarebut in LibreELEC this directory is inside the read-only
SYSTEMfile preventing you from adding files. To allow user changes we support overlays. Copy firmware files and subfolders to
/storage/.config/firmwareand reboot. On boot the folders/files will be overlaid onto
/usr/lib/firmwarewhere kernel drivers expect to see them.
dmesgshows the kernel failing to load
rtl8761a_config.binwhich is needed for a Bluetooth device to work: