How to install unknown apps on Fire TV devices

To install apps that are unavailable locally on an Amazon Fire TV device like the Fire Stick and Fire Cube, we'll first need to enable installing apps via unknown sources. We can do that easily using the steps below.

Step 1:

From the Home screen, long press the Home button on your remote  then select Settings.

Step 2:

Scroll all the way to the right and select My Fire TV

Step 3:

Select Developer Options

Step 4:

Select 'Install Unknown Apps' and click on the app you want to allow permissions to and set it to 'On'

That's it! You're now ready to sideload apps to your Fire TV device.