Help & troubleshooting for channels on your Roku device, including adding/removing channels, logging in to, authenticating, or activating a channel, channel-specific playback issues, assistance contacting channel publishers to report issues, and adjusting channel-specific settings.
In addition to having broken the time & date, 9.3 seems to have broken Prime Video as well. Prime video launches, sits on black screen, then displays a window in Japanese with a .jp url. Then reverts to a window in English saying there is no internet connection. Yet other channels are using internet connection just fine.
Nope. Removed and reinstalled. Still won't connect. My Older stick in another room on the same network works fine. I posted elsewhere that they seem to have buggered up the NTP server too. Don't know if that could screw with Amazon. Every network reset sets the clock to 5:53pm April 20 (presumably 12:53gmt).
You can revert to 9.2 via one of the secret menus:
home (5 times) FF (3x) REW (2x)
choosing update software gives you the option to change 9.3 to 9.2
I used it because it broke something in Hulu for me. (* brought up same screen as the down arrow instead of the options menu; only if Hulu screensaver ran first, only on one of two Ultras recently purchased from Roku about a month apart).
Once it reverted to 9.2, update from the normal setup menu shows me up-to-date at 9.2. I assume it will update itself again at some point.
If Roku is interested, the Ultra with the problem had updated to 9.3 earlier, it broke on the 9.3 update to a new build. The Ultra that's not affected updated directly from 9.2 to 9.3 build 4143-46 and remains there.