Hi All,
To anyone that has not updated their Leviton devices yet: they have now released the firmware in a similar way as Aeon does with theirs, packaged with an executable that does the work...
So, at least people don't have to spend money anymore on the HomeSeer Z-Flash license. I have not tried it myself as I already upgraded all of them but I'm sure you can use that package with the Hubitat stick (with the drivers and instruction on this thread)... Worst case, seems like they are also sending a free Z-Wave Stick if you do not have one to do the upgrade...
Firmware 1.20 for all Leviton Z-Wave Plus devices: link
Details here: