sudo mv firefox /opt/Ĭreate symlink in order to set the new firefox as default. wget $(uname -m)/en-US/firefox-50.0.tar.bz2Įxtract the package. Then run following command to download firefox 50 source code, which comes as. For example we're going to install firefox 50. Via Mozilla's ftp site (kudos for for sharing the link !). You may have two choice to choose for installing method: