Ronhks's Wiki

Requirements:

Installed Deconz software. Downloadable, here: http://deconz.dresden-elektronik.de/ubuntu/stable/

Download the lates firmware from here:

http://deconz.dresden-elektronik.de/deconz-firmware/?C=M;O=D
(deCONZ_ConBeeII_0x)

Stop all services:

$ sudo systemctl stop deconz && sudo systemctl stop deconz-gui

Stop ModemManager if it is installed:

$ sudo systemctl stop ModemManager

Update the firmware:

sudo GCFFlasher_internal -t 60 -d /dev/ttyACM0 -f <LOCATION_OF_THE FIRMWARE_IMG>/deCONZ_ConBeeII_0x1234567.bin.GCF

src: https://github.com/dresden-elektronik/deconz-rest-plugin/wiki/Update-deCONZ-manually