Peter, when you say "Lumin X1 P-series U-series T3X T3 T2 D3 support Qobuz Connect in Firmware 19", are you referring to Firmware 19 for the Lumin app (e.g. the app on my iPhone?)
I'm using a Lumin P-1, and the Lumin app on my iPhone shows I am running Firmware version 18.1, released on...