Firefox 5

Firefox 5 is not available as an official update but is planned for Fedora 15. Meanwhile Tom Callaway has a repository available for Fedora 15 and Fedora 14 users that want to use the latest release.

Download http://repos.fedorapeople.org/repos/spot/firefox5/fedora-firefox5.repo and place it in /etc/yum.repos.d.

su -c 'wget -P /etc/yum.repos.d/ http://repos.fedorapeople.org/repos/spot/firefox5/fedora-firefox5.repo' 

Use PackageKit or run the following command,

su -c 'yum install firefox5'

Note: You might want to remove any other Firefox versions on your system. Although Firefox 5 is parallel installable, running it together with other versions is not recommended.