Install Firefox 46 On Ubuntu 16.04 / 14.04 LTS / LinuxMint / CentOS

In this Tutorial I will show you how to install Firefox 46.0 on Ubuntu 16.04 LTS /14.04 / 12.04 LTS, LinuxMint 17 / 16 / 15 , Fedora ,  CentOS 6.X / 7.x , OpenMandriva & OpenSUSE

Firefox a most commonly used browsers by everyone and one of the standard browsers too.It is an opensource browser and it is developed by mozilla corporation and mozilla Foundation and  available for Multiple Operating systems (ie) Windows,Linux,Mac OSX. 
and it comes with its private mode and powerful plugins

Firefox Released its new stable Version 46.0 on April 26th 2016

Changelog in Firefox 46.0

New

• Improved security of the JavaScript Just In Time (JIT) Compiler
• Use Content Decryption Module as a fallback to decode unencrypted H.264 and AAC media where available
• GTK3 integration (GNU/Linux only)

Changed

• WebRTC fixes to improve performance and stability

Developer

• Display dominator trees in Memory tool
• Allocation and garbage collection pause profiling in the performance panel
• Launch responsive mode from the Style Editor @media sidebar

HTML

• Added HKDF support for Web Crypto API
• Added support for document.elementsFromPoint

Installation Steps

Method 1 (For Debian based systems) Via PPA 

Best and easy way is to upgrade firefox by updating the Repository, it will automatically upgraded to new version

sudo apt-get update

sudo apt-get upgrade

Method  2 : Via tar file

Step 1:Download The Latest Version of Firefox 46 from their FTP using wget
https://ftp.mozilla.org/pub/firefox/releases/46.0/

For 32 bit systems

wget https://ftp.mozilla.org/pub/firefox/releases/46.0/linux-i686/en-US/firefox-46.0.tar.bz2

For 64 bit systems

wget https://ftp.mozilla.org/pub/firefox/releases/46.0/linux-x86_64/en-US/firefox-46.0.tar.bz2

Step 2: Extract the tar package

tar -xjf firefox-46.0.tar.bz2

Step 3: Move the Firefox 46 folder to opt
Remove the Older version of firefox if it's there

sudo rm -rf  /opt/firefox

sudo mv firefox /opt/firefox46

Step 4: Create Symbolic link for New Firefox as default

sudo mv /usr/bin/firefox /usr/bin/firefoxold

sudo ln -s /opt/firefox46/firefox /usr/bin/firefox