Firefox Extended Support Release
From Free Knowledge Base- The DUCK Project: information for everyone
The Firefox Extended Support Release so that you don't get forcefully upgraded to the dreaded Quantum 57.
GUI WAY...
- Open Software Manager
- In the search box type "Firefox" and click "remove"
- Close Software Manager
- Launch Software Sources (Menu button - Administration - Software Sources)
- Choose PPAs and +Add a new PPA
- enter: ppa:mozillateam/ppa
- Click "update the cache" and close Software Sources
- Open Software Manager
- In the search box type "Firefox-esr" and when located "install"
CLI WAY...
sudo add-apt-repository ppa:mozillateam/ppa -y sudo apt update sudo apt install firefox-esr
See also: Firefox , Favorite Firefox Extensions