I have a smart lightswitch...
.and I've never updated it.
It has this clever function, If I press the top of the switch when it off, the light comes on. If I press the bottom of the switch when the light is on, it goes off.....but wait, here is the REALLY clever bit.
If I press the top, when it's on, it stays on. If I press the bottom of the switch when it's off, it stays off.
And best of all it still works if the wifi if not working.
Smart huh?