After giving up and then doing some thinking, I was able to get the U1 to successfully control this TCL 65R635 Roku TV. The problem was that the commands from the U1 were only intermittently received. This was frustrating and useless. When I tried moving the U1 remote very close to the TV IR sensor, it worked fine. Further investigation lead to the realization that the TV's IR receiver actually faces down, rather than forward, as one would expect. Placing a mirror at a 45 degree angle under the TV's "TCL" bottom center logo allows the U1 remote to work from a normal distance. This is not a problem when using the Roku remote because that uses an RF interface. The TV and the Roku remote appear to support both RF and IR.

After working with SofaBaton and TCL, through email, we have resolved that the U1 remote will not work with this TV because it is designed to use the Roku Enhanced remote which uses an RF interface that the U1 does not support. SofaBaton recomends the X1 model, (that supports RF), which should be available later.

Not sure what "it" means in the instructions. Have tried to update the database by: 1.) Adding and removing the "4K Roku TV" device and 2.) uninstalling and reinstalling the Sofabaton app.

Hi, thank you for your response. After following your instructions, am not finding "65R635" in the "Popular models" list.