sudo apt remove firefox.
   sudo rm -Rf /usr/bin/firefox.
   sudo rm -Rf /usr/loca/firefox.
   sudo snap remove firefox.

For a number of months, I have not been able to update firefox to my Linux system. I download it and opened the downloaded file, opened various files, but nothing happens. I have tried using various methods to download and update it, but I continue to get a message that update is available. I'm currently using 121.0.1. I have a number of download files in my download folder, such as..."/home/jim/Downloads/firefox-128.0(1).tar.bz2" I tried to uninstall and reinstall "How to remove Mozilla Firefox from Ubuntu" sudo apt remove firefox. sudo rm -Rf /usr/bin/firefox. sudo rm -Rf /usr/loca/firefox. sudo snap remove firefox. and then this "Install Firefox" First, add the Mozilla signing key $ sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys 6DCF7707EBC211F. And then install the latest version of Firefox with this command: $ sudo apt install firefox. These commands seem to complete normally, but I continue to get "update available" messages. I give up. I've done everything I can think of. Help would be greatly appreaciated. Jim