The Guide Shows You How to Install Firefox Nightly 73 i686 for Linux Mint 13 Maya KDE4 32-bit Desktop.
The Firefox Nightly Version can Coexist with the Others Firefox Versions without Troubles, this Mean that Once Fired Up it Will Just Load the Default Firefox Environment.
More than this Once Installed it Will Plug-In the Firefox Nightly Channel and Like Every Other Firefox Version in the Future will Follow to be Automatically Updated to the Newest Firefox Nightly Release.
Inside the Instructions you will Find also a Link to How to Create a Launcher for the Firefox Nightly Browser on Linux Mint Desktop.
Download Firefox Nightly for Linux:Firefox i686 tar.bz2
Find and Double-Click on the Archive and Extract Into /tmp
Open a Terminal Window
(Press “Enter” to Execute Commands)
Login as SuperUser
If Got “User is Not in Sudoers file” then see: How to Enable sudo
mkdir -p /opt/firefox
Move the Firefox Directory
sudo chown -R root:root /tmp/firefox && mv /tmp/firefox /opt/firefox/nightly
Adding Nightly to the System Path by a Symlink
ln -s /opt/firefox/nightly/firefox /usr/local/bin/nightly
Next you Can Start Firefox from Terminal Simply with
For Quick Starting Create a Linux Mint Application Launcher:Mint-KDE App Launcher How-to
How to Install Google-Chrome Browser for Linux-Mint: