1、切換到root用戶
su -
2、安裝Remi repository
rpm -Uvh http://download.fedora.redhat.com/pub/epel/6/i386/epel-release-6-5.noarch.rpm
rpm -Uvh http://rpms.famillecollet.com/enterprise/remi-release-6.rpm
3、查看可用版本
yum --enablerepo=remi list firefox
4、更新或者安裝Firefox
yum --enablerepo=remi update firefox
yum --enablerepo=remi install firefox
轉自：http://blog.chinaunix.net/uid-22322105-id-3057476.html