Hi, i have such a device left and want to use it as an Zigbee Router for HA using Z2M. I’ve tried a lot to add a firmware (e.g. from Sonoff Dongle Flasher - SONOFF Dongle where i can choose 3 different router FWs) but after flashing i can’t pair them. Pairing starts but then fails and leave the router as an “unknown” Zigbee device in HA.