Change my wifi ssid and password

I want to change my wifi password
How i change the homey wifi paasword after i change the ssid?
Because i guss after this i cant connect to my homey…

I found this

Is it still relevent?
This is the way?

i really like the support pages where things like this are given:
How do I connect Homey to a different Wi-Fi network?

Just wanted to make sure so i will not delete my homey

Tried this.
Turned it upside down and waited ten seconds (how do I know when the “10-second countdown” is finished?) Nothing happens, no Homey wifi-network starts.