The easiest way to ensure you always have the latest version of your apps is by turning on automatic updates, but you can also manually update them. If you have sideloaded apps on your Fire TV, you can update them by using a third-party program on your computer that connects to your Fire TV.
How to Automatically Update Apps on Fire Stick
Turning on the automatic app update setting on your Fire TV means you won’t have to manually update your apps.
How to Manually Update Apps on Fire Stick
If you don’t have automatic updates turned on, follow these instructions for each individual app you want to update manually.
How to Update Sideloaded Apps on Fire Stick
If the connection is successful, you’ll see your connected device and connection status appear in the boxes at the top. Your app will be updated the next time you access it from your Fire TV.