This month, has announced that Mozilla will phase out support for the Firefox web browser app on 's Fire TV product line.
Firefox for Fire TV and Echo Show will be discontinued - gHacks Tech News
Firefox browser is leaving Fire TV and Echo Show at the end of the month
Fire TV Sticks Are Losing The Firefox Browser
Firefox Is Back. It's Time to Give It a Try. - The New York Times
Firefox for FireTV Stick, Firefox for Fire TV Support Forum
How to dismiss ending support banner at the top of the screen in Firefox on Fire TV? : r/firefox
Mozilla Ends Support for Firefox on Fire TV and Echo Show
The 15 Best Firefox Extensions for Improving Productivity
How to change your Mozilla Firefox password or recover your account