On standard Ubuntu builds, Firefox is preinstalled as it’s the default browser. But if you’re running a minimal install or you removed Firefox in the past, you can use any of the methods shown here to install Firefox. Install Firefox with snap If you have a desktop environment with the Ubuntu Software applet installed, you can install Firefox graphically with the steps shown below. Launch Ubuntu Software and search for Firefox. Open the Firefox page, select the version, and press Install. After it’s installed, search Firefox and launch it from the Applications menu. Alternatively, you can also install Firefox from the terminal with sudo snap install firefox This’ll install the stable version by default. If you want a different release such as the beta or edge versions, you can specify the channel like so sudo snap install firefox --channel=latest/beta sudo snap install firefox --channel=latest/edge A major benefit to installing packages as snaps is the ease of maintenance. The snapd daemon checks for updates multiple times a day, so you don’t need to worry about manually updating Firefox. Install Firefox with apt If you want to install Firefox with apt, the usual method won’t work. This is because the Firefox package in the Ubuntu repo is just a transitional dummy package that links to the Firefox snap. Instead, you can follow the process described below: Remove Firefox Snap First, remove the Firefox snap if it is present on your system. Remember to back up any important user data (e.g., bookmarks) beforehand. sudo snap remove --purge firefox Add & Install Firefox Add the MozillaTeam PPA with sudo add-apt-repository ppa:mozillateam/ppa To ensure the snap version doesn’t get automatically installed in the future, we must create a config file to set a higher PPA priority. sudo nano /etc/apt/preferences.d/mozillateamppa Add the following configuration and save the file: Package: firefox* Pin: release o=LP-PPA-mozillateam Pin-Priority: 501 After saving the file, update the package index and install Firefox. sudo apt update && sudo apt install firefox Updating Firefox Unlike the snap, Firefox needs to be manually updated if installed with apt. You can do this by running sudo apt update && sudo apt install --only-upgrade firefox