How to pair my Xfinity Comcast remote to my Roku TV

the codes (TCL,Admiral, etc) didn't work for me, but this did (for volume, power, and input buttons) !

If it has a Setup button:

1. Turn on your TV.
2. Press and hold Setup until the light at the top of the remote changes from red to green.
3. Enter 9-9-1. The light should flash green twice.
4. Keep pressing CH ^ until the TV turns off.
5. Once the TV turns off, press Setup to lock in the code.
6. Press the TV power button on the remote. If the TV turns on, you're all set!

from: https://www.xfinity.com/support/articles/programming-your-xfinity-remote

tcl 55r617

xfinity XR11 remote