My Z-stick USB address changes

[silvrr]

I had similar issues in the past and switched to this method about two months ago. Multiple restarts and even a pi switch without issue.

Persistant USB names

What I did was ssh to the host and ran ls -al /dev/serial/by-id. That will list all of your serial devices and their symlinks to the /dev/tty* device. Just update your Home Assistant config to point to the correct device using /dev/serial/by-id/DEVICENAME and you should be good to go.

You can see my actual implementation here:
https://github.com/SilvrrGIT/HomeAssistant/blob/master/configuration.yaml#L155