Download the latest Firefox archive from here (32 bit) and here (64 bit). At the time of last update of this article Firefox 20 is the updated stable version available. Download Firefox 20 source code as per your system architecture using one of following commands.
32-Bit Systems
# cd /opt
# wget https://ftp.mozilla.org/pub/firefox/releases/20.0/linux-i686/en-US/firefox-20.0.tar.bz2
64-Bit Systems
#cd /opt
#wget https://ftp.mozilla.org/pub/firefox/releases/20.0/linux-x86_64/en-US/firefox-20.0.tar.bz2
2. Extract Archive on System
After downloading latest version of Firefox archive on your system, let̢۪s extract is using following command.
# tar xvjf firefox-20.0.tar.bz2
3. Configure Firefox
Firefox source is completely pre compiled and we dona have to do anything to make it running on system. We just need to create a soft-link of Firefox binary file to systems bin directory to make it accessible from anywhere in system.
# sudo ln -s /opt/firefox/firefox /usr/bin/firefox