Q. My Firefox version is 126.96.36.199 and I’d like to update the same to latest version. How do I upgrade my Firefox on Linux?
A. You can easily upgrade firefox on Linux.
Please note that installing Firefox 2 will overwrite your existing installation of Firefox. You won’t lose any of your bookmarks or browsing history, but some of your extensions and other add-ons might not work until updates for them are made available.
Update Firefox on Ubuntu / Debian Linux
You can use APT package handling utility i.e. apt-get command. You can also use a GUI package tool called Update Manager:
Just type the following two commands at terminal:
$ sudo apt-get update
$ sudo apt-get install firefox
You can also use GUI tool: Click on System > Administration > Update Manger > Click on Check button see for updates
Update Firefox on Fedora / Redhat / CentOS Linux
Use yum tool or gui tool for the same purpose:
# yum update
# yum update firefox
Update firefox from official Mozilla site