Update Zigbee Firmware

Find your device

smarthome@raspi:/opt/smarthome/zigbee/cfg/zigbee_firmware $ ls -l /dev/serial/by-id/
total 0
lrwxrwxrwx 1 root root 13 Nov  9 14:30 usb-Itead_Sonoff_Zigbee_3.0_USB_Dongle_Plus_V2_a028fc1bda12ef11be6d78b8bf9df066-if00-port0 -> ../../ttyUSB0

Update your device

smarthome@raspi:/opt/smarthome/zigbee/cfg/zigbee_firmware $ mkvenv
smarthome@raspi:/opt/smarthome/zigbee/cfg/zigbee_firmware $ source venv/bin/activate
smarthome@raspi:/opt/smarthome/zigbee/cfg/zigbee_firmware $ universal-silabs-flasher --device /dev/ttyUSB0 flash --firmware ./raspi.gbl