Enter this code( if using the terminal): tar -xzf 2 tar.gz2) file is kept using the terminal or using file manager. Press Ctrl+Alt+T to open the terminal and copy-paste this code: sudo apt remove firefox Go to Firefox Release archive and download a suitable version for you. This is how I downgraded to Firefox 50 version from version 57. deb repacks of the latest official release versions of Mozilla Firefox, Mozilla SeaMonkey, and Mozilla Thunderbird. This is the home of the Ubuntuzilla project, hosts an APT repository with. Quote from ubuntuzilla official wiki page : Run following command to download firefox :Ħ4 Bit wget /projects/ubuntuzilla/files/mozilla/apt/pool/main/f/firefox-mozilla-build/firefox-mozilla-build_39.0.3-0ubuntu1_bģ2 Bit cd Downloads/ & sudo dpkg -i firefox-mozilla-build_39.0.3-0ubuntu1_bĦ4 Bit cd Downloads/ & sudo dpkg -i firefox-mozilla-build_39.0.3-0ubuntu1_b Remove firefox first : sudo apt-get purge firefox deb files, to install follow the instruction below. Sudo ln -s /opt/firefox/firefox /usr/bin/firefox sudo mv /usr/bin/firefox /usr/bin/firefox_old 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 !). List of known supported versions from newest to oldest:īeginning from version 50.1.You may have two choice to choose for installing method: Important: If you wish to use older version of Firefox without automatic updates (which is a default stetting in Firefox) you need to go to settings and change update options when you launch it for the first time. Here is the official guide on how to install older versions of Firefox browser if you wish to do so: We strongly recommend that you upgrade to the most recent version of Firefox as new improvements and security patches are released on a regular basis. Therefore there is no guarantee that the extension will function as intended on older versions of the browser. VidIQ for Firefox is not supported by versions of the browser older than 50.1.0.

How to get older versions of firefox