I have a new Hisense 58inch 4K HDR UHD Roku TV Series R6. I’m trying to prepare myself for next generation gaming PlayStation 5 and wanting to know will there be a firmware update for the HDMI 2.1?
HDMI 2.x is a hardware specification, not a software one. It cannot be updated with software.https://www.cnet.com/news/hdmi-2-0-what-you-need-to-know/
The R6 supports HDMI 2.0a
https://www.hisense-canada.com/assets/ProductDownloads/13/a7c7677e6f/58R6109_SpecSheet.pdf2.1 will support higher refresh rates, but since the TV cannot, updating the HDMI spec would be pointless.