After update 10.5.0 my Roku Ultra no longer powers on or wakes up when turning my television on after it has been off overnight. The Ultra is powered by its own adapter and to turn it on I have to unplug and plug the power adapter back into it. Can someone help?
My Roku Ultra 2020 shows an update to go from 10.5.0.4201 to 10.0.0.4209. So that's a downgrade for problems with the newer firmware. I found this by doing a manual check for update. I am not updating since my Ultra is working OK. But you should try the downgrade and report back.
Roku operating system version 10.5, which is currently rolling out, has added a new "Power" item in the Settings > System menu for some of the latest Roku models. In my estimation, these power management options don't work very well.
If you have a "Settings > System > Power" menu item, under "Auto power savings" see if deactivating "After 20 minutes of no interaction" fixes the problem.