No, it is always set to /dev/ttyACM0 and it’s the Docker mapping that links it to the real physical device.
First, there is a warning regarding the use of the ezsp driver. This one is deprecated in favor of the ember driver. This isn’t caused by you and I’ll create a GitHub issue so we can fix that. And it shouldn’t prevent it from working. EmberZNet adapters (Silicon Labs) | Zigbee2MQTT
Your error comes from the fact that the backup you’re restoring was made with a different dongle
Error: This open coordinator backup format not for EZSP adapter
When you change dongles, that requires re-pairing all devices FAQ | Zigbee2MQTT and therefore the backup doesn’t work.
To fix the issue (
you’ll have to re-pair all the devices but there’s no choice), you need to delete the file /var/lib/gladysassistant/zigbee2mqtt/z2m/coordinator_backup.json then restart the Z2M integration (by disabling/enabling it for example)