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 http://rpms.famillecollet.com/remi-release-17.rpm

## Fedora 16 ##
rpm -Uvh http://rpms.famillecollet.com/remi-release-16.rpm

CentOS 6 / Red Hat (RHEL) 6

## Remi Dependency on CentOS 6 and Red Hat (RHEL) 6 ##
rpm -Uvh http://download.fedoraproject.org/pub/epel/6/i386/epel-release-6-8.noarch.rpm
 
## CentOS 6 and Red Hat (RHEL) 6 ##
rpm -Uvh http://rpms.famillecollet.com/enterprise/remi-release-6.rpm

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:

firefox

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