
I currently have Firefox 65 installed in Ubuntu 18.10, and I want to downgrade it using apt. To downgrade a package to a specific version, you'll need to append =version after the package name in the installation command, with version being the version to which you want to downgrade the package:

How To Show A History Of Installed, Upgraded Or Removed Packages In Debian, Ubuntu or Linux Mint.To be able to downgrade a package in Debian, Ubuntu or Linux Mint (and other Debian/Ubuntu-based Linux distributions), the package version to which you want to downgrade must be available in a repository. Sometimes you may encounter issues with a recently upgraded package, and you want to downgrade it.


This article explains how to downgrade a package to a specific version using apt, in Debian, Ubuntu or Linux Mint (from the command line).
