Or you could just airgap all the switches and just push the airgaps back in on a few switches at a time until they are fully updated.
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Looks like Iām in a similar boat. Iām seeing worse dimming performance across multiple bulb types (recessed LEDs, PHILIPS LED Vintage Flicker-Free Clear Spiral, maybe others). Single pole with neutral. Mine donāt buzz but they sorta fade in and out/flicker at low dimming levels. I could probably set a minimum level and that would fix it but the lights would end up pretty bright. Iāve got some switches with older firmware and a Lutron switch Iām going to try when I get a chance just for comparison purposes. Iāll also try to get a video. (We have a new baby in the house so who knows when Iāll have the time to test thought)
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We did lower the possible minimum level in this release so you may need to manually set a minimum level to get back to where you were on the previous firmware.
Based on some peopleās results, it sounds like we really need an option to switch back and forth between trailing edge and leading edge. Is there a technical reason why this wasnāt set as a user-configurable parameter instead of basing it on wiring configuration?
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That makes sense- Iām that case Itās entirely possible/likely these bulbs didnāt light at all at this dimming level with leading edge dimming. Iāll be able to tell better tonight when itās dark if the lights seam any brighter at the new minimum level. Iāve got one switch still at 2.08 - itās has two recessed lights vs 4 on the other switches but it might be a good reference point.
I believe it has to do with the way the relay is used for switch + dumb switch or non neutral. I canāt remember the details but thought it was a hardware limitation.
That might make sense for 3-way configuration, but for single pole installations, it was in leading edge before and trailing edge now, I canāt see how that couldnāt be a parameter (that is only possible for single-pole configurations.)
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In a single pole configuration there is no reason you canāt tell the switch itās in a 3-way and then select dumb switch or aux for your desired mode 
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Iām in the same boat, w.r.t the āpulsatingā lights at low brightness levels - I wouldnt call it flickering, but getting slightly brighter/dimmer over the course of ~1s. This is with a single switch (so presumably trailing edge now), with 8 lights on the circuit. I increased the frequency of power reports from HA, you can see that itās stable for a bit, then starts fluctuating, corresponding with the unexpected changes in brightness
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That sounds exactly like what I was seeing. Iāve got energy reporting disabled so I donāt have graphs to check.
The good news is somehow I think itās fixed for me now - unfortunately Iām not exactly sure what fixed it. It I had my minimum brightness set somewhere around 40 and it was still happening. I was planning on doing a factory reset tonight but before I did that I was testing all kinds of minimum brightness settings. Eventually I set the minimum brightness to zero and then increased the brightness in increments of 3 (basically 1%) to see how high I had to go for the lights to turn on at all. At 6 they were supper faint and at 6 they were on but flickered/pulsed. I might have been able to get away with 9 as the minimum brightness but I went with 12 just to be safe.
Iām not sure why I was seeing the issue at a higher minimum earlier and now a low value is working well. Maybe setting it to zero reset something or tiggered the switch to recalculate something but at least for now Iām quite happy with how itās working.
Iāve got at least one other one circuit showing the same issue (different bulbs though). Iāll play with that one tomorrow and see if going back to zero on the min brightness fixes that one too.
So out of 60 switches. I only had 1 that went all weird after updating the firmware
Specifically, it kind of acted like it was in Smart Bulb mode (ie. always deliver continuous power), even though it WASNāT in smart bulb mode. I could not do any button combinations (ie. favorite + 3 or 4 paddle presses), or turn on/off the light (it was always on).
The switch itself responded to button presses (LED bar goes up, communicates with other switch, etc), if not favorite/paddle combinations - itās just like the button was disconnected from the electric part that controlled the light.
Since I had that switch setup in a Master / Slave setup with another 2-1 switch, I have just swapped the master and slave switches (so now the one that WAS the slave, is controlling the light, and the one that WAS controlling the light only has power and communicates via. Zigbee). This has worked around the issue.
I probably could have RMAād the switch that failed after itās firmware was updated, but this way I donāt have to. It still serves itās purpose fully, but just living on as a slave, instead of a load bearing switch.
I had a similar issue with flicker/fading. As well as some strangeness with ramprates that should have been 0, but were taking time to ramp on and off. Factory reseting the switch resolved the issues.
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I have a few switches that are causing the flashing bulbs as well. It seems to just be happening on my Cree recessed bulbs though. All of my Philips bulbs seem fine.
I did try the factory reset as well as changing the minimum dimming level to 0 and then back up with no luck yet. This was a little after sunrise so it was tough to see if they were still flashing or not.
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I am doing this. Still having some issues updating. A couple switches are still failing but Iāve got 6/26 updated. It seems I can only do 1-2 max.
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AFIK that is true. But I canāt say 100% certain.
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I have 20 of these in the home (5 more in boxes still to install), running Z2M via HomeAssistant. 9 of the switches have updated to 2.14 no problem, but I have 11 that either have not, or are reporting 2.08 still (although they went through the upgrade process). I have been targeting them 1 at a time (yepā¦ slow and steady). For those that have been upgraded but are still reporting incorrectly, am I forced to remove and re-add them to Home Assistant? It will be a huge pain for all my automations. I have tried reconfig etc, and they no longer respond to upgrade requests (I believe because they already are)
Any tips welcome!
Just for reference, I flashed 2 switches that both started on version 2.00 with no issues yesterday.
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For what itās worth, I had 33 connected units upgrade all at the same time through HA ZHA and the process went flawlessly. Some switches took longer than others, but they started around the same time and finished within about 10 minutes of one another. These were a mix of first batch fixed units and the second batch.
see my post above to update the information in z2m Blue Series 2-1 Firmware Changelog | VZM31-SN - #440 by bgreet
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So I ignored the switch for a few days and then it magically worked when I tried last night. ĀÆ\(ć)/ĀÆ