Got no suggestions. I’ve seen it take some time. Also that info is of questionable value so it’s not something I stress out about.
There are two possibilities
- The Z-wave stick can be joined to the SmartThings mesh as a secondary controller. It will see all the functioning Z-wave devices in the mesh. You’ll be able to select devices, then select firmware files to be pushed to the devices.
- The Z-wave stick can be an independent controller of its own mesh. In this approach you have to remove devices to be upgraded from the SmartThings mesh via exclusion and add them to the mesh controlled by the stick. Then you can do the upgrade, remove them from the stick’s mesh, and add back to the SmartThings mesh.
Although it’s less work and less disruptive, I’ve found the first method to be very hit or miss. Zooz does not recommend it last time I looked at their instructions.
If the firmware update is major, the device might need a factory reset after update.
The second method is hugely annoying as it wipes the device(s) out of all automations. But it’s the most reliable.
Yes, contact Leviton support. Not sure if it’s still the case but in the past they have provided loaner Z-wave sticks as well as the firmware files.
I did my Levitons the expensive way, by purchasing the Z-flash software from Homeseer and an S2-capable Z-wave stick from Zooz. Since then I’ve used the stick several times to upgrade other devices.