I came across an interesting thread in the Z-Wave JS repo that contains pointers to newer ota firmware updates for the DZ6HD and DZ15S, and I thought it worth posting info here. Leviton doesn't provide release notes so what all the changes are is unknown, but they are being recommended for performance/stability improvements.
Firmware version 1.22 for the DZ6HD can be found here.
Firmware version 1.23 for the DZ15S can be found here.
Note that the Hubitat Device Firmware Updater app is not currently able to perform firmware updates for these Leviton devices. You will need to use a Z-Wave stick and PC Controller to perform the ota upgrade. If you don't have experience with PC Controller, I recommend waiting until Device Firmware Updater is updated to work with these devices.
I've updated over a hundred devices so far, the the firmware works well.
One additional item, if you are using the "Leviton DZ6HD Z-Wave Dimmer" driver, I recommend switching to the "Generic Z-Wave Smart Dimmer" driver. The DZ6HD specific driver appears to have a bug in which it queries the device for updates twice rather than just once. For the DZ15S, I use the "Generic Z-Wave Smart Switch" driver.
Thanks for this. I had issues with the DZ15S over a year ago and the told me the FW had been updated but that they did not support OTA updates so they sent me a new switch. I tried it but I still was not impressed. I will give this a whirl.
Note that the Hubitat Device Firmware Updater app is not currently able to perform firmware updates for these Leviton devices. You will need to use a Z-Wave stick and PC Controller to perform the ota upgrade. If you don't have experience with PC Controller, I recommend waiting until Device Firmware Updater is updated to work with these devices.
One additional item, if you are using the "Leviton DZ6HD Z-Wave Dimmer" driver, I recommend switching to the "Generic Z-Wave Smart Dimmer" driver. The DZ6HD specific driver appears to have a bug in which it queries the device for updates twice rather than just once. For the DZ15S, I use the "Generic Z-Wave Smart Switch" driver.
Curious why "Generic Z-Wave Smart Switch" instead of "Generic Z-Wave Plus Switch"?
Nuts, but thank you... I was trying to do the 1.23 update for a DZPA1, and I can't find a .ota for it. I'll keep digging though. Thanks again!
ETA - I found everything I need and got it updated. Sometime soon, I'll try to make a comprehensive post about this Leviton update process from start-to-finish -- there was a lot of 1-step-forward-two-steps-back until I finally got it all sorted!
Don’t worry about the Home Assistant talk on that page, as these are the same firmware files to use with the Hubitat Z-Wave Updater.
I (patiently) updated a bunch of DZ15S and the plug-in module DZPA1 to firmware version 1.23, which seems to have addressed issues with delayed activation.
I think there is a plain Z-wave firmware updater and a Z-wave binary firmware updater. I've had success with the plain driver only (the one where you don't pick your target).
I've also had to host the file locally in order for the file to successfully upload.
I would recommend that you try changing the driver to "Generic Z-Wave Smart Switch", and then making the change to LED using the commands on the device itself.
If you don't have it, you can find the manual here.