Bluetooth Dongle Invalid HCI interface Raspb2


Please check this thread: How to mount /lib/firmware RW

Firmwares are located in /lib/firmware on the host os.

BalenaOS does not ship the /lib/firmware/rtl_bt/rtl8761a_fw.bin file.

You’ll need to:

  • get that firmware from somewhere, this debian package for example ;
  • copy it to your container;
  • follow the thread linked above to bind-mount /lib/firmware in the container;
  • on runtime in your container, re-mount the bind-mount from above rw and copy the firmware in it.
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