Make it executable: chmod +x ~/bin/fx4 ~/bin/fx It's assumed that the Firefox executable is Firefox 3.6 which is the case on Maverick (10.10), but not Natty (11.04). Press Finish when done.Ĭreate the file ~/bin/fx4, containing: #!/bin/shįirefox4 -no-remote -P firefox4 the file ~/bin/fx, containing: #!/bin/shįirefox -no-remote -P default default by your profile name for Firefox 3.6)

Press Create Profile and enter firefox4 as profile name.

Optional steps if you'd like to run Firefox 3.6 and 4 simultaneously with a single command:Ĭreate new profile for Firefox 4 by starting the Profile Manager: firefox4 -ProfileManager To check for updates manually, go to Help => Check for updates. The package manager ( apt) does not take care of updating the Firefox package from Mozilla. Important: if you download Firefox from Mozilla, the auto-update feature of Firefox is enabled. If you wish to use Firefox 4 instead of the Firefox version installed on the system, run: ln -s ~/bin/firefox ~/bin/firefox4 From now on, you can run Firefox 4 by executing firefox4.

If you ~/bin was previously non-existent, you need to re-login to update your the path in which Ubuntu searches for applications.

Open a terminal and extract the archive to ~/firefox by running: tar xjf firefox-4.0.tar.bz2Ĭreate the directory ~/bin if non-existent and make a link named firefox4 to the Firefox 4 executable: mkdir ~/bin (note that these packages are built for 32-bit systems, 64-bit systems may encounter strange issues like missing icons) Download Firefox from to your home directory.I'm using separate profiles for Firefox 3.6 and 4 for optimal compatibility. The Firefox package from Mozilla can be extracted to any directory, like /opt or your home directory. In the answer below, 'Firefox 3.6' is the installed version, 'Firefox 4' is another version you want to use

Download old version of firefox 3.6