Cannot switch on the C4 again with the BR1BT. I'm using the same RJ45 cable as before, so I'm thinking it must be something to do with the cable rather than anything else. Going to try with a new "fresh" cable and see if that makes any difference.
Switching on (via BR1) should be as simple as : TV -> Select button (to chose the opening tv function, i.e. App, HDMI1, Live TV etc) but TV is not turning on. Worked sporadic for longer periods to all of a sudden not working. I did not make any changes to the TV settings...
Will keep this post updated as I move, slowly, forward... :-)