YesPlayer is a video player for Android that supports several different formats, including MP4, FLV, MKV, and more. And while there's no YesPlayer app in the Amazon Fire TV app store, there is a way to install the YesPlayer APK file on Firestick. You'll need to enable apps and install a downloader app to do so.Glenn Carstens-Peters / Unsplash
How to Enable Apps From Unknown Sources
Before you add a downloader and install YesPlayer on Firestick, check to make sure you can install apps from unknown sources. If not, the installation will be unsuccessful.
Use your Amazon Firestick remote to select Settings from the Home screen on your television.
Scroll to the right and select Device.
Scroll down to select Developer Options.
Select Apps from Unknown Sources to enable it.
Select Turn On on the confirmation message that appears, then return to the Home screen.
How to Install Downloader App
Since YesPlayer is not available on Fire TV's app store, but has an APK file available, installing a downloader to your Amazon Fire TV Stick will enable you to install the app.
Use your Amazon Fire Stick remote to select Search from the Home screen on your television.
Use the on-screen keyboard to search for downloader, then select downloader when the search result appears. A list of relevant apps will appear under Apps & Games.
If you have a voice remote, you can also search by pressing and holding the Voice button on the remote and saying, "Downloader."
Select the downloader app you want to install to open the download screen.
You can also view more details about the app on this screen, such as screenshots, trailers, and reviews of the downloader app.
Select Download, then select Open once the download is complete.
How to Install YesPlayer on Firestick
Now that you have a downloader installed, you can install YesPlayer on the Amazon Fire TV stick directly from the website.
Use your Amazon Fire Stick remote to select the downloader app you installed from the Home screen on your television.
Enter http://ow.ly/16gn50xNJbb for the URL for the direct download of the YesPlayer APK file or enter the URL for the YesPlayer APK file you want to download.
Enter a name for the file, then select Download Now. Wait until the file has downloaded.
Use your Amazon Fire Stick remote to return to the Home screen on your television, then select the YesPlayer app to open and start using it.