It was mentioned here that The Red Series 2-1 would be able to be configured to use trailing or leading edge dimming in some configurations. I have one setup in as a single-pole dimmer with neutral wire present, but I couldn’t find a z-wave parameter or button push combination to switch between the two dimming modes (I assume it’s in trailing edge based on that post).
Does anyone know how to switch it to leading edge dimming? Or is this something that is coming in a future firmware update?
Yup, this is 100% my bad. I thought this was included in firmware version 1.00, but it is actually in 1.01 that I’ve been testing and I misspoke. I just realized this today when I was updating all the parameters on our GitHub page and didn’t see it in the 1.00 release notes. I went and checked and it’s highlighted in red on the 1.01 release notes.
I can send you 1.01 if you need Leading Edge.
If you need it to be Leading Edge prior to the firmware update, I think you can actually switch it to: Multi-Way w/Dumb Switch and it will automatically switch to Leading Edge and not mess up your Single-Pole setting.
Very sorry about this mixup.
Thanks, no worries! I just thought I was going crazy since no one else had that question 
Switching to multi-way w/ Dumb Switch looks like it works. I’ll stick with the 1.00 firmware until 1.01 is officially released to update my switches. Thanks for clarifying!
Parameter 26 doesn’t exist in v1.0 firmware. It will be new.
I feel like a fool.
So it’s been a year and I’m still unable to change this from the Z Wave parameters and I do have parameter 22 set to 2, and a neutral connected.
I just ordered and set up a bunch of these and I forget every time the physical button combination, and whenever I Google or search it, it’s very hard to find and not documented in Red Series 2-1 Switch • Parameters | Inovelli Help Center
That page doesn’t even suggest how it can be changed. You can’t even click the parameter to learn about it.
It’s also not in the manual, and it should be noted it was the biggest selling point for me.
I do see it’s here but this page doesn’t come up in searches or when talking to your support robot Red Series 2-1 Switch • Button Combinations, Quick Tap Sequences & Local Configuration Options | Inovelli Help Center
This parameter is intentionally blocked from being changed in Home Assistant or Z-Wave JS as an easily accessible control (for safety reasons).
If a light that doesn’t support trailing edge is put into trailing edge mode the switch can overheat. By having the change done at the switch itself, it ensures that the user is keeping an eye on it when making the change and operating on the correct switch.
See Inovelli VZW31-SN Firmware 1.2 New Parameters · Issue #6273 · zwave-js/node-zwave-js · GitHub
There are instructions at that link that show you how to change it as a custom configuration parameter from the Z-Wave JS UI control panel.
Oh I see, I can manually set it with a custom parameter. Thank you!
