Roku will not update automatically or manually. I still have 9.1.0 5006. I have tried rebooting, unplugging everything listed in the threads. Because of this my channels will not update. Please help.
You may have an old Roku model that is no longer supported and cannot run the newer Roku software. You can find your model number via Settings > System > About (at least, that's where it's shown in current products). You need the model number, not just the name, because Roku tends to reuse model names from year to year.
Then see if your model number is listed in the chart of unsupported "Legacy" products in the bottom chart on this page:
https://developer.roku.com/en-ca/docs/specs/hardware.md
(You may have to scroll right to find your model.)