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[How To]: Install Mozilla Firefox 21 Web Browser on Ubuntu, RHEL, CentOS, Fedora

Mozilla Firefox 21 web browser for desktop and mobile were released a few days ago, the Desktop and Mobile releases are packed with some new features, several enhancements and security fixes. Check How to install/update Mozilla Firefox 21 for many Linux distribution such as “Fedora, CentOS, RHEL, Ubuntu, Linux Mint, …” and the release notes down below.

Mozilla-Firefox-21-CentOS 6.4

Mozilla Firefox 21 Desktop web browser release notes.

Mozilla Firefox 21 Mobile web browser release notes.

Download Mozilla Firefox 21 for Android devices directly from Google Play Store using this Link.

[How To]: Install Mozilla Firefox 21 on CentOS 6.4 and RHEL

Here we will use Remi repository for installing Firefox 21 on CentOS, RHEL and its derivatives.

Run Terminal, then type,


Browse the directory you have downloaded Remi repository and install it using this command with administrative privileges.

rpm -Uvh remi-release-6*.rpm

Finally enable Remi repository and install/update Firefox 21 using this command with administrative privileges.

yum --enablerepo=remi update firefox

[How To]: Install/Update Mozilla Firefox 21 On Fedora

Mozilla Firefox 21 has been built on Fedora 17, Fedora 18, and Fedora 19 and it will ported soon as stable release and you will be able to install using official fedora repository.

yum update

For early releases of Fedora such as Fedora 15 and Fedora 16 you can install it using Remi repository.

Fedora 16

rpm -Uvh remi-release*.rpm
yum --enablerepo=remi update firefox

Fedora 15

rpm -Uvh remi-release*.rpm
yum --enablerepo=remi update firefox

[How To]: Install/Update Mozilla Firefox 21 on Ubuntu 13.04 Raring Ringtail

Ubuntu repository will be updated soon with the latest stable release of Mozilla Firefox version 21 so, no need to add additional repository simply run the update manager and it will be installed along with your system updates. If you would like to install update Mozilla Firefox only you can use these commands.

sudo apt-get update
sudo apt-get install firefox

[note]Mozilla Firefox 21 will be available to install using the official Ubuntu repository for Ubuntu 10.04 LTS Lucid Lynx, Ubuntu 10.10 Maverick Meerkat, Ubuntu 11.04 Natty Narwhal, Ubuntu 11.10 Oneiric Ocelot, Ubuntu 12.04 LTS Precise Pangolin, Ubuntu 12.10 Quantal Quetzal and Ubuntu 13.04 Raring Ringtail. Also, the same installation instruction works on Ubuntu derivatives such as “Kubuntu, Xubuntu, Ubuntu Studio, Linux Mint, …”[/note]

Remi repos.

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