For Fire Devices:  
I Would NEVER Use the Firestick Without CHANGING These Settings

For Nvidia Shields:
Every Nvidia Shield TV Setting Explained - What you REALLY need to change 2023

Sphere App Settings
Opt. 1:  Press the Three Line Icon on your remote and then left select once to Settings and select.
Opt. 2:  Press the Center Select button once, down select once, and left select once to Settings and select.
Opt. 3:  Press the Back Button on your firestick remote Two Times if you subscribe to one playlist.  Press the Back Button Three Times if you subscribe to, two or more playlists. Scroll down to Settings and select. 

Restarting you Device:
Whether you have a Firestick or Nvidia Shield it is recommended to "RESTART" your decide every 3-5 days.  Doing this will help keep communication from the device to the app flowing.

Updating Playlist/EPG:
Go to settings, select Playlists, select Update all playlists
Go to settings, select EPG, select Update EPG

Firestick & Fire TV Users:

Settings (the gear icon on your remote or scroll to settings from the firestick home pg).  
Select My Fire TV
Then choose Restart.

Nvidia Shield Users:  
Settings (top right corner of the screen home pg).
Select "Reboot" option (sometimes labeled as "Restart" or under "Quick Settings").

Apple TV Users:
Settings (from home screen)
Select System
Then select Restart (for Apple TV 4K or HD) 

On Apple TV 3 or older: 
Settings (from home screen)
Selcect General 
Then Restart

For the latest Siri Remote or Apple TV Remote: 
Hold down the Back (“<”) button (or “Menu” on older remotes) and the TV/Control Center button (with the TV icon) together for about 5–10 seconds until the status light on your Apple TV starts blinking. Release the buttons, and your Apple TV will restart

Google TV Users:
You can restart your Google TV by navigating to:
Settings (the gear icon at the top right of your TV screen)
Select System
Then choose Restart
Run Internet Speed Test
Click GO

Update EPG and Playlist
Open Settings and open EPG and select.  Then select Update EPG.  Go back and open Playlists.  Then select Update all playlists.

Restart Streaming Device
For Fire Device:  From the home page open settings then open My Fire TV and select Restart.
For Nvidia Shield:  From the home page open settings then select Reboot

Unplug Device 
Disconnect power source from device for about 30 seconds and reconnect

Reset Modem
Disconnect power source and cable from modem box for about 30 second and reconnect.
How to Find Settings
Firestick Settings
Opt. 1:  Press the Gear Icon on your firestick remote and scroll right to Settings and select
Opt. 2:  Press the Home Button Icon on your firestick remote, then left select five times to the Person/Gear Icon and select.

Nvidia Shield Settings
Opt. 1:
From the home screen select the Three Line Button on your Nvidia remote.  You are now in the Settings menu.
Opt. 2: From the home screen scroll to the Gear Icon top right corner and select.  You are now in the Settings menu.

Sphere App Settings
Opt. 1:  Press the Three Line Icon on your remote and then left select once to Settings and select.
Opt. 2:  Press the Center Select button once, down select once, and left select once to Settings and select.
Opt. 3:  Press the Back Button on your firestick remote Two Times if you subscribe to one playlist.  Press the Back Button Three Times if you subscribe to, two or more playlists. Scroll down to Settings and select. 

Manage Groups
Open Playlist and select the playlist you want to manage.  Scroll down to Manage Groups and select.  Scroll through the groups and turn slides off or on.

Add Playlist
The select the Playlist you want to add (Live TV, V.O.D, or V.O.D +) and select.  Enter your Username and Password that was emailed to you.  Be sure you enter the correct User info for the correct Playlist.

Delete Playlist
Open Playlist and select the playlist you want to delete.  Then scroll all the way to the bottom and select Delete playlist.

Re-Log In
Open the Playlist you need to Login to.  Scroll to Xtream Codes parameters and select.  Select the Username and Password fields and enter the login info that was emailed to you.   Be sure you enter the correct User info for the correct Playlist.

Adding Channels to Favorites
Be sure you are on the channel you want to favorite.  Select the Gear Icon on your firestick remote, press the left select button twice and select Add to Favorites.  You can also select the Three Line Icon on your remoted and left select twice to Add to Favorites and select.
**If you don't have Gear Icon or Three Line Icon on your remote press the center select button once, down button once, and left button twice and select Add to Favorites**

Multi Viewing
Be sure you are on the channel you want to favorite.  Select the Gear Icon on your firestick remote, press the right select button and select Multiview.  **If you don't have Gear Icon on your remote press the center select button once, down button once, and left button twice and select Favorites**
Press the center select button (OK button).  Select Add screen.  Find the channel you want to add and select it (repeat for more screens).

Remove Multiview Screen
Select the screen you want to remove using the left, right, up, down select buttons.  Press the Center Select button once for menu.  Scroll down and select Remove screen (repeat to remove more screens).

Enlarge a Screen
Highlight the screen you want to enlarge then press and hold the center select button till screen enlarges.  To minimize screen, highlight the screen you want to minimize.  Then press and hold the center select button till screen minimizes.

Finding the TV Guides
Guide 1:  Press the Center Select button once and select TV Guide.
Guide 2:  Press the left select button once
Guide 3:  Press the back arrow button once
Guide 4:  Press Center Select button once, down select once, right select once.  Select Channels list.

Finding Categories and Favorites
Press the left select button twice.  Scroll through various categories. Sports, PPV Live (Events), Network TV, Locals, Favorites, and many others.

Searching for Programs and Channels
Be sure to select All channels from the Categories Guide (Left select twice) and select a program (make sure your in full screen).  The press the center select button once, and the down button once.  Then select the Search Icon.  Hold the Blue Voice button on your remote and voice what program, show, or channel you are wanting to find.

Finding V.O.D Movies and Shows
Your TV must be on full screen.  Press the back button once, and then left select twice.  Scroll to Movies or Shows (TV Series) and select. 
To get back to Live TV
Press the Back button 4 times or until you see the categories menu (Search, TV, Movies, Shows) Select TV.

Setting up V.O.D Movies and Shows (Settings)
Select the Movies category and the select All movies.  Scroll to the top right corner and select the three lines.  Change to By date added.  Then press the back button three times.  Select Shows and do the same thing.

Changing Language for Movies & Shows
Some movies may automatically play in a foreign language.  Once you have started the move press the Center select button once, then down select once.  Scroll right to the Speaker Icon and select English.  If English is not an option then that movies does not have an English version.  
Record TiviMate TV programs on Firestick with external storage - YouTube

https://www.youtube.com/watch?v=fmTS_M8e-cE