Well, that was certainly exciting for me. I can report that Chris' firmware upgrade worked for me and I'm on to exploring DolbyVision and HDR10 programming. I have a Denon AVR that will be getting a DV firmware upgrade sometime this first quarter so for now, the Oppo-203 is connected directly to HDMI 2 of the tv and the second output from the player is connected to the AVR for audio. I have a DV disc that I can play and report back the DV functionality of the tv connected to my Oppo and I have a Roku Ultra for HDR and DV as well. Vudu (through the Roku) has titles that are available in DV so I'll check that in due time.Sorry for the blow by blow narration. After the 6th attempt at powering off the tv manually on the lower left corner and going though the reset combination by remote, I've gladly seen AL Freaking Pacino!
I'll keep going and get back to you all.
Thanks again to Chris and all who've pioneered Dolby Vision for our capable tvs. Now, on to color settings and calibration.