When the Roku devices and the RokuTVs miss a couple of updates, and the USB update does not work for the RokuTV, as reflected in your other posting, https://community.roku.com/t5/Roku-setup/TCL-55in-Roku-TV-55S20-won-t-update-with-usb-nor-via-intern..., then Roku support will likely have to intervene to get you back up and running.
Unfortunately, I think you will need Roku to progressively update the RokuTV. (ie. 9 to 10, then 10 to 11, etc. Can't just update straight to 11 and beyond if the USB update file is not working).
You can try connecting to a mobile hotspot if available to you to see if you can update that way, but I think you will likely run into the same firmware incompatibility issues.
Paging @RokuDanny-R , @RokuKariza-D , and @RokuMary-F who can get you to the support team.
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