If you have added any of PPAs ( ppa:mozillateam/ppa or ppa:jonathonf/firefox-esr) and Firefox was upgraded from 52 to 60 then remove any PPA with version 60 and enable special one ( ppa:jonathonf/firefox-esr-52) with the commands below: sudo ppa-purge ppa:mozillateam/ppa Notes: if you have already added ppa:jonathonf/firefox-esr PPA before and do not want Firefox to be upgraded to version 60, then you can pin this version with the following command (16.04 LTS as an example): cat <
#HOW DO I DOWNLOAD OLDER VERSIONS OF FIREFOX INSTALL#
Get Firefox ESR 60.x as snap: snap install -channel=esr/stable firefox If you need supported Firefox ESR then you can add one of the PPAs. Get supported Firefox ESR 60.x (LEGACY ADDONS do not work here)