My understanding is that Channels still supports this ancient tuner. I have one and it'll scan channels with the hdhomerun_setup and can tune channels with the HDHomerun Config GUI and display them via VLC on a Windows PC. The NVIDIA Shield's HDHomerun app brings up a guide and I can tune the channels.
Channels DVR finds the source but shows 0 channels. It says to use the Channels app to update to the latest firmware which I've done (it's on 20230505 which is the latest for the hdhr-us). The Channels Client on the Nvidia Shield will see the channels on the source but trying to tune them will give a not found message. The server source never shows any channel available.
Is this device really supported? Is there a secret to getting the server to see channels.