PosterBox isn't in the app store on every platform, but installing it takes just a few minutes using the free Downloader app. Works on Fire TV, Android TV, Google TV, and any other Android TV OS device.
If you are already familiar sideloading apps using Downloader, simply use SHORT CODE 2644883 in the Downloader app. If you need step by step instructions, see below.
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The free Downloader app by AFTVnews is the easiest way to sideload on any Android TV OS device — including Fire TV, Android TV, and Google TV.
From your TV's home screen, navigate to the app store using your remote:
Use the on-screen keyboard or voice search (if available) to search for:
Select the app from the results — it has a simple orange icon. It's free to install.
Select Download or Get and wait for the installation to complete. Once installed, do not open it yet — you need to enable a permission first.
You need to grant Downloader permission to install apps before it can sideload PosterBox.
Navigate to Settings on your TV. This is usually found in the top-right of the home screen or accessible by holding the home button on your remote.
Find the option labelled Install unknown apps or Unknown sources. Select Downloader from the app list and toggle it to On.
On Fire TV, you may instead see a single toggle called Apps from Unknown Sources — switch that on.
With Downloader installed and permissions set, you're ready to go.
Launch Downloader from your app list or home screen. The first time you open it, it may ask to access storage — select Allow.
Select the URL input field at the top and use the on-screen keyboard to type the following short code:
When finished, select Go or press the OK / Select button on your remote.
Downloader will show a progress bar as it fetches the APK file. This usually takes under a minute depending on your internet speed. Do not navigate away while it downloads.
Once the download finishes, an installation screen will appear automatically. Select Install and wait a few seconds for the app to install.
After installation Downloader will offer to delete the APK file — select Delete to free up space, then Done.
PosterBox is now installed! Find it in your app list, open it, and start your free app to begin displaying beautiful movie posters on your TV.
** IMPORTANT ** Some versions of Android TV do not have a settings button mapped to allow you to getting into settings. Please use the DOWN button on your navigation instead to get into the app settings.
Security tip: Once PosterBox is installed, it's good practice to go back into your Settings and turn Unknown Sources / Install Unknown Apps back off for Downloader. This prevents any other app from accidentally installing unverified software in the future.