Revert back to firefox version 57 from 58.0b4
I installed firefox quantum. After that to install Firefox developer, I ran #sudo add-apt-repository ppa:ubuntu-mozilla-daily/firefox-aurora #sudo apt update #sudo apt install firefox. This replaced my existing quantum(Version 57 browser) with 58.0b4. How do I go back to the stable quantum version?
I would think by uninstalling it and pulling out any data folders left behind. I would save a copy of your profile and then try to install from Full Version Installer https://www.mozilla.org/firefox/all/ Your Linux, I understand that your type of installer (command line) will be available in the next couple of days.
Please let us know if this solved your issue or if need further assistance.