I normally set up a fresh installation with keyboard/mouse/display although to be clear, this on a second RPi4 that is near my Desktop PC where I download images and make SD cards etc. CHANGEME is a ‘empty’ WLAN entry in the Astroberry wireless settings which you could edit to set up with your home SSID and password, but only if you are already logged in to the astroberry interface. I have no idea why you are seeing it as the broadcast hotspot name!
dlwmacgregor wrote: The only new network I can see on my Galaxy is one named CHANGEME.
Is that the one I want?
It can't connect at 10.42.0.1 because it says that the password is wrong.
Do I configure the connection using DHCP or static IP address?