Mozilla Firefox is a solid and best web browser option that works seamlessly with the Amazon Firestick. Firefox is the fastest and most secure web browser where you can easily search and discover the websites you want. It comes with a clean, safe, and fastest downloading interface and does not take too much of your internet data. It supports bookmarking and tabbed browsing, so the users can easily switch between several sites. With the tools like pop-up blockers, anti-phishing, and anti-malware, Firefox blocks the malicious website. Mozilla Firestick is free and is compatible with major devices like Amazon Firestick, iOS, Android, Windows, Mac, etc. You will find alternative ways to use Firefox on Firestick.
FYI: Earlier, Firefox was natively available on Amazon App Store. For some reason, Mozilla Firefox ended its service for Firestick on April 30, 2021.
How to Install Firefox on Firestick
Note: If you don’t want to sideload and use Firefox on Firestick, you shall look for better Firefox alternatives to use on your Fire TV.
Before installing any third-party app, you need to turn on the Apps from Unknown Sources feature. To do so, follow the below steps.
 Navigate to the Settings (Gear icon) with your Fire TV remote.
 Then, go to the My Fire TV/Device section.
 Click the Developer Options in the menu.
 Turn on the Apps from Unknown Sources option.
Install Downloader on Firestick
 Return to the homepage and tap the Search icon.
 Search for the Downloader app and choose the app from the list below.
 Select the Get/Download button on the app info page.
 After the installation hit the Open option.
Sideload Firefox on Fire TV Stick
 Now, open the Downloader app from the Fire TV’s Your Apps and Library section.
 Enter the download URL of the Mozilla Firefox apk and click Go.
 Wait for a while, and then tap the Install button.
 Hit the Open option once the installation is over.
 Launch Mozilla Firefox from the Apps section and start browsing.
Related: How to Install Google Chrome on Firestick / Fire TV
Alternate Way: Get Mozilla Firefox on Amazon Firestick Using ES Explorer
Having done with the pre-requisites, you shall follow the steps given below.
 Navigate to the Firestick home screen, and click on the Search icon
 Enter the ES File Explorer on the search box.
 Now, choose the ES File Explorer app from the available list.
 Select the Install option to download the app.
 Open the ES File Explorer app.
 Now, click the Tools option from the left side of your screen.
 Here, you find the Download manager and click on it. You have to buy the premium version of the ES File Explorer app to install apk files.
 Click on the + option located at the bottom of the screen.
 The pop-up screen will appear with two options: Path and Name field.
 Choose the Path: enter the Mozilla Firefox URL and Name: Mozilla Firefox.
 Now, click Download to download the app
 After downloading, click Install, and you can find the Mozilla Firestick on your Firestick under the Apps & Games section.
With the help of a third-party app Downloader or ES Explorer, you can sideload the Mozilla Firefox on your Amazon Firestick.
Amazon Silk Browser, Google Chrome, etc., work fine on Firestick.
It is actually free of cost.