I have a house full of LZW30-SN switches (~30 or so) at firmware 1.9 and I started with a working HS4 (HomeSeer 4) system using a HomeSeer SmartStick+.
One of the switches is a three-way that never worked properly. I updated the firmware on the switch to 1.20 and used parameter 13 which made the three way work nicely. I really liked the instant on functionality that came with 1.19 and decided to update the rest of my switches to 1.20. Turns out that HS4 can’t update the firmware on switches included securely (the three way wasn’t included securely for some reason). So I stopped homeseer and spun up zwavejs2mqtt. Two switches were able to update 1.20 easily.
However, when I tried to update the next switch, the firmware update timed out. After that, virtually every single LZW30-SN was reported dead in zwavejs2mqtt.
I picked one of the switches and tried to exclude, the switch’s exclusion timed out. I then tried to factory reset it, but after holding the config button for 20 seconds, the red light just turns off (it doesn’t blink).
Next, I then tried to reset the smartstick. No changes.
I then installed the PC Controller and tried to use that on a laptop sitting beside some affected switches. No changes. They can’t be excluded, added, or factory reset.
I did come across some switches that were able to be factory reset, excluded, and added; but most of the ones I’ve tested don’t respond to z-wave anymore.
Note, local functionality on all switches still works, just the z-wave part seems to be failing.
tldr; after a firmware update timed out, a large amount of LZW30-SN stop responding to includes, excludes, and factory resets.