Since the update we have several issues. The only way we can operate the Roku now is to unplug the device from power and HDMI each time we want to use. Extremely annoying.
The 1st symptom is the remote refuses to communicate with the device. The white lite just blinks but nothing happens. I have to remove the batteries, unplug the device from power & HDMI, reinsert the batteries and replug the Roku... then it MIGHT work. This is every time we want to use it. We tried a work around to use the TV remote to select a new 'source' but then the display is wacky, we get a small screen display in the upper left corner of our TV screen. So the only option is to completely unplug and go thru the steps above EACH TIME.
I have checked for a software update to roll it back to 10.0 but we do not have the option. Please advise.
Try disabling "power saving" under Settings->System->Power.
Roku operating system version 10.5 added a new "Power" item in the "Settings > System menu" for some of the latest Roku models. In my estimation, these power management options weren't very well thought out. If this is the cause of your problem, pressing the Roku remote's Home key should bring it to life without having to unplug the device.
If you have a "Settings > System > Power" menu item, under "Auto power savings" see if deactivating "After 20 minutes of no interaction" keeps the Roku from shutting down.