I had never intended to provide this functionality, but it is very useful if you do not have a local network available and you need to configure a new remote control.
Simply boot up the Ryde and then plug the USB keyboard into one of the RPi 4's USB2 ports. Then type menu and press enter, and the receiver will stop and your HDMI screen will display the console menu. You can then change any settings, and restart the receiver, by using the keyboard.
It does work with the latest version (202007200), but I do not guarantee that this trick will always work. Much of the functionality it provides should be possible from the on-screen menus in future versions.
Thanks to Wolfgang for this tip!
At some point the player will be controllable from a keyboard which will break this, I'll make sure that is below adding config options to the player on the list.