- Scroll down to Settings from the Main Menu.
- Select My Fire TV.
- Select Developer Options.
- Enable Apps from Unknown Sources.
- Go back to the home screen and tap the Search button.
- Using the on-screen keyboard, type “Downloader” into the search bar.
- From the search results, choose the Downloader app.
- Once the app has been downloaded, click on Open.
- If asked, choose Allow and then OK to grant the app the necessary rights.