Same issue with my TCL 55R615 TV after update 10.5.0 build 4201-30 . Also while I rarely used it I can no longer screen mirror my laptop to the TV. May god strike me dead if I ever buy another TV that allows someone in California to experiment with my set.
Update Shortly after posting screen mirroring started working signal meter still shows 1 bar.
With latest update now all my over-the-ir digital TV stations show as 1 bar of power level even though they were all 4 or 5 before the update. The channels appear strong picture wise, so I'm thinking new version broke the display of signal levels. This is again on ALL 40+ channels!
Im sure glad i have my ding-a-ling and my guitar to play with while my signal strength meter on my 60" tv with 300 channels and built in tv guide isn't working or else i might go completely insane living here in podunk.
On another account I notice all the program information for the channel you were watching is available on your screen pic. I had that feature when the TV was new by pressing the OK button, and then STAR button, it would bring up a full description of what the tv show was about. Not anymore. However when I followed your instructions to disable, that feature came back. While watching an OTA channel I hit the OK button, and then STAR button I was stunned. Like you said the TV guide disappeared. Well I reversed the change so I would get the TV guide back and the shortcut to program info disappeared with it. There is another way to access program info but it does not work for all channels like the shortcut did. I miss the shortcut.
Thanks again your info was helpful to me. I hope ROKU comes through with a fix soon.
I was so frustrated with the update and was browsing the internet and found a list of 'secret menu' settings for the Roku (I have the 43" TCL tv) I'll copy and paste the rest in case you want to give them a try. Good luck!
Press the Home button five times, press the Fast Forward (FF) three times, press the Rewind (RW) button twice.
This menu will allow you to factory reset, run a USB test, and update the server or software. Use this one at your own risk.
Secret menu screen 2:
Press Home five times, Up direction, RW twice, FF twice.
This will reboot your Roku device.
Secret menu screen 3:
Press Home five times, Up, Down, Up, Down, Up.
•This code will bring up a secret Wi-Fi menu to see things like signal strength.
Secret menu screen 4:
Press Home five times, FF, Down, RW, Down, FF.
•This will give you access to a hidden antenna menu.
Secret menu screen 5:
Press Home five times, RW three times, FF twice. •This will bring up a bit rate menu where you can see quality settings and set bitrates.
Secret menu screen 6:
Press Home three time, Up twice, Left, Right, Left, Right, Left.
•This code will give access to the channel info menu.
Secret menu screen 7:
Press Home three times, Up twice, Right, Left, Right, Left, Right.
•This will give you access to developer mode.
Secret menu screen 8:
Press Home five times, Up, Right, Down, Left, Up.
•This hidden screen will allow you to remove auto-pair, cycle screen shot, cycle ad-banner, log theme info.
Roku System Number and software edition:
-Roku device model, serial number, device ID, and software OS/version (these can all be found in Settings > System > About) -tracker ID when this issue occurs (when you see this issue occur, press the Home button 5 times, followed by the Back button 5 times) -steps to reproduce the issue you are seeing