humm… just tried the above but GCFFlasher_internal shows no device
root@core-deconz:/# GCFFlasher_internal -l
no devices found
Path | Serial | Type
------------------+-------------+---------------
Not sure why, I’d expected to see my raspbee2 listed there, so what I’ve said might not work.
Maybe because raspbee it’s in use by the addon. You’d need to also stop deconz first…
I’ve also seen that there’s something for the firmware in the deconz addon code: https://github.com/home-assistant/addons/blob/master/deconz/rootfs/etc/cont-init.d/firmware.sh
but not sure how to use/if it’s useful.