There are beta firmware for Home Assistant SkyConnect / Home Assistant Connect ZBT-1 USB dongle:
There are loads of other existing threads discussing migrating from the old “ezsp” driver (ezsp adapter) to the new “ember” driver (ember adapter) in Zigbee2MQTT so maybe check those first, but the point is that the old ezsp adapter is deprecated (i.e. it is oboslete and will sooner or later be discommisioned/removed) so you have to both migrate to that new “ember adapter” in Zigbee2MQTT if want to continue using a Silicon Labs EmberZNet based adapter with Zigbee2MQTT, and that new “ember adapter” requires a newer firmware version (but you have migrate adapter and firmware in the correct order). Check out these:
- SkyConnect v7.3.2.0 ezsp to ember - driver depricated
- HA Yellow Zigbee2MQTT Ember
- Skyconnect/ZBDongle-E, Zigbee2Mqtt and change to ember adapter, not working
- Move from EZSP to EMBER
- Ezsp To Ember
Regardless, this has nothing to do with Home Assistant so belongs in Zigbee2MQTT’s own community:
- https://www.zigbee2mqtt.io/
- Koenkk/zigbee2mqtt · Discussions · GitHub
- Issues · Koenkk/zigbee2mqtt · GitHub
- zigbee2mqtt
PS: Again, you should still make sure that you are at least following these generic best practice tips → Zigbee network optimization: a how-to guide for avoiding radio frequency interference + adding Zigbee Router devices (repeaters/extenders) to get a stable Zigbee network mesh with best possible range and coverage by fully utilizing Zigbee mesh networking