Small crackling noise from Aqara H1 dual with neutal

Hello!

Another of my switches seems to fail. Although it works great, once a couple of seconds there ia a clicking noise that comes from it.
It is not the same as the click when you want to turn on/off any button, a more subdued sound.

What can it be?

It also doesn’t want to update to latest version and stays blocked at 3%

Could you please send us a short video to show it?