Install Firefox 26 on Fedora 20/19, CentOS/Red Hat (RHEL) 6.5

Mozilla Firefox 26 is released and this is guide, howto install Firefox 26 on Fedora 20/19/18/17/16, CentOS 6.5/6.4/6.3/6.2/6.1/6 and Red Hat (RHEL) 6.5/6.4/6.3/6.2/6.1/6 using YUM. Firefox 17 ESR (Extended Support Release) is currently available on CentOS 6.5/5.10 and Red Hat (RHEL) 6.5/5.10 own repos, so with this guide you can also install Firefox 17 ESR on CentOS 5.10 and Red Hat (RHEL) 5.10.

What’s new in Firefox 26

  • All Java plug-ins are defaulted to ‘click to play’
  • Password manager now supports script-generated password fields
  • Support for H.264 on Linux if the appropriate gstreamer plug-ins are installed
  • Support for the CSS image orientation property
  • There is no longer a prompt when websites use appcache
  • Various security fixes

What’s new in Firefox 17 (ESR)

  • First revision of the Social API and support for Facebook Messenger
  • Updated Awesome Bar experience with larger icons
  • JavaScript Maps and Sets are now iterable
  • Improvements that make the Web Console, Debugger and Developer Toolbar faster and easier to use
  • New Markup panel in the Page Inspector allows easy editing of the DOM
  • Sandbox attribute for iframes implemented, enabling increased security
  • Over twenty performance improvements, including fixes around the New Tab page
  • Security fixes

Read full details from Firefox 26 release notes and Firefox 17 release notes.

Install Mozilla Firefox 26/17 on Fedora 20/19/18/17/16, CentOS 6.5/6.4/6.3/6.2/6.1/6/5.10 and Red Hat (RHEL) 6.5/6.4/6.3/6.2/6.1/6/5.10

1. Backup your current Firefox 3/4/5/6/7/8/9/10/11/12/13/14/15/16/17/18/19/20/21/22/23/24/25 profiles (just in case)

tar -cvzf $HOME/mozilla-firefox-profiles-backup.tar.gz $HOME/.mozilla/firefox/

2. Change root user

su -
## OR ##
sudo -i

3. Install Remi repository

Note: Currently not needed on Fedora 20/19/18, CentOS 5.10 and Red Hat (RHEL) 5.10.

Fedora 17/16

## Fedora 17 ##
rpm -Uvh
## Fedora 16 ##
rpm -Uvh

CentOS 6 / Red Hat (RHEL) 6

## Remi Dependency on CentOS 6 and Red Hat (RHEL) 6 ##
rpm -Uvh
## CentOS 6 and Red Hat (RHEL) 6 ##
rpm -Uvh

4. Check Available Firefox versions

Fedora 20/19/18

yum list firefox

Fedora 17/16, CentOS 6.5 and Red Hat (RHEL) 6.5

yum --enablerepo=remi list firefox

CentOS 5.10 and Red Hat (RHEL) 5.10

yum list firefox

Note: Firefox 17 ESR available.

5. Update or Install Mozilla Firefox 26/17

Fedora 20/19/18

yum update firefox
## OR ##
yum install firefox

Fedora 17/16, CentOS 6.5 and Red Hat (RHEL) 6.5

yum --enablerepo=remi update firefox
## OR ##
yum --enablerepo=remi install firefox

CentOS 5.10 and Red Hat (RHEL) 5.10

yum update firefox
## OR ##
yum install firefox

Note: Firefox 17 ESR available.

6. Start Firefox 26/17

Then start Firefox with using command:


Or use Firefox (26/17) launcher.

Firefox 21/20/17 Screenshots

Firefox 21 running on CentOS 6.4

firefox 21 on CentOS 6.4

Firefox 20 running on Fedora 18

Ffirefox 20 on Fedora 18

Firefox 17 running on CentOS 5.9

Firefox 17 ESR on CentOS 5.9

Follow If Not True Then False Updates!


  1. I’m using RHEL-6.4 and i don’t have RHN subscription.

    • You need RHN subscription to install needed dependencies on RHEL 6.

  2. Hi, why firefox 27 is not in remi repository?

    • Hi George,

      I’m not sure, but I guess that it’s coming soon.

  3. Worked from the first time! Thanks!

  4. Not so soon, because this version is released on 4-feb-2014 now is 11-mar-2014. After week or two they will release firefox 28.

    • Hi again George,

      Just checked Remi’s forum and I found that the reason is the lack of time. So maybe next build is Firefox 28 then.

Add Comment Register

Leave a Comment

Your email address will not be published. Required fields are marked *

You may use these HTML tags and attributes: <a href="" title=""> <abbr title=""> <acronym title=""> <b> <blockquote cite=""> <cite> <code> <del datetime=""> <em> <i> <q cite=""> <strike> <strong>


  1. CentOS 6 - VMware Player - [...] Re: CentOS 6 - VMware Player Basta installare il pacchetto da YUM, qui …
  2. CentOS « danslinux - [...] install Chromium. To update to the new version of Firefox you need to follow the instructions here worked perfectly. I …
  3. Old Browser Version - [...] dont use Cent OS but I found this website but there should be a way to …
  4. Firefox 10 - [...] Install Firefox 10 on Fedora 16/15, CentOS/Red Hat (RHEL) 6.2/6.1/6 : [...]
  5. Unable to launch firefox browser from redhat 5.8 - [...] then ran the firefox from a linux terminal where i installed the firefox software followed the doc So …
  6. Upgrading to Firefox 14 on Fedora 15 - [...] But I can't figure out how to get yum to find a newer version. I tried the instructions here: …