Update ZigBee firmware using deCONZ on Hass.io

[WhimsySpoon]

Doubtful, it was only recently changed to Kelvin:

WTH is light temperature not in Kelvin?

Kelvin is the go to method for everything color temperature for the vast majority of users. When you buy a bulb, it gives you the color temperature in Kelvin. Why can’t I set bulbs by Kelvin? (In the UI). The visual representation of a bulb should be in Kelvin.

Use Kelvin as the preferred color temperature unit

The changed was released late last year - 2022.11: A heck of a release! - Home Assistant