LZW31-SN, Zigbee downlights and Home Assistant - Config help

Just to clarfy… by latest firmware do you mean 1.57?

As far as parameter you want to set:
21 = 0 (No Netrual) or 1 (Neutral)
22 = 2 (Aux switch)
52 = 2 (SBM)

Then use this automation to dim the bulbs:

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