Firefox ESR (Firefox Extended Support Release) is an official version of Firefox for enterprise. It comes with latest security and stability fixes but not with latest features. you can use ESR version on university, government, business and all others organizations.
Install Firefox ESR on Ubuntu Linux
You can install Firefox ESR via snap and PPA. Open your terminal (ctrl+alt+t) command line application and run below command to add Firefox team PPA.
sudo add-apt-repository ppa:mozillateam/ppa
Confirm the PPA using the enter key. Now run below commands one by one.
sudo apt update
sudo apt install firefox-esr
It will install the latest version of Firefox ESR on your Ubuntu Linux. After the installation you can open it via your application menu.
You can remove Firefox ESR and its PPA using below commands.
sudo apt remove --autoremove firefox-esr
sudo add-apt-repository --remove ppa:mozillateam/ppa
Install Firefox ESR via Snap:
Open the terminal command line application and run below Firefox ESR snap installation command.
sudo snap install firefox --channel=esr/stable
It will install the latest version of Firefox ESR on your system. If you get the “snap “firefox” is already installed” message then uninstall the old firefox using below command.
sudo snap remove firefox
After that run above Firefox ESR snap command. That’s all.