This guide will walk you through the steps of installing (a.k.a. sideloading) a 3rd-party app, like Kodi, onto any Amazon Fire TV or Fire TV Stick. This guide uses my own app, called Downloader, which is available for free from the Amazon Appstore. You do not need a computer, an external drive, a keyboard, ADB, or anything else to follow this guide. All you need is your Fire TV remote and about a minute of your time. This is currently the quickest way to sideload apps on the Fire TV or Firestick, and is easier than using ES File Explorer.