In Windows and Mac, downloading and installing Firefox 3.5 is very easy. But if you new to Ubuntu or Linux, it is littlebit difficult to install Firefox 3.5. There are several reasons for downloading and updating to firefox 3.5 and one of main reason is Firefox 3.5 is fastest browser then any other browser.

How to Download & Install Firefox 3.5 on Ubuntu?

There are two methods for downloading and installing Firefox in ubuntu.

A. Installing via Repository

If you are downloading firefox for first time on your Linux box then add following repository to source list. Others please skip to step 3

1. Open your Terminal and run following command

echo ‘deb http://ppa.launchpad.net/ubuntu-mozilla-daily/ppa/ubuntu jaunty main’ >> /etc/apt/sources.list

echo ‘deb-src http://ppa.launchpad.net/ubuntu-mozilla-daily/ppa/ubuntu jaunty main’ >> /etc/apt/sources.list

2. Add the Launchpad PPA GPG key:

sudo apt-key adv –keyserver keyserver.ubuntu.com –recv-keys 247510BE

3. Now run below command on your terminal

sudo apt-get update && sudo apt-get install firefox-3.5

B. Using Wget

1. Either you can download Firefox 3.5 via any other browser if you have on your Ubuntu or else run following command on terminal to download Firefox 3.5.

wget -O – ftp://ftp.mozilla.org/pub/firefox/releases/3.5/linux-i686/en-US/firefox-3.5.tar.bz2 | tar xj –C ~

2. Double-click the Firefox file inside the Firefox folder in your home directory, or run this command:

~/firefox/firefox

That’s it, a latest version of Firefox 3.5 is installed and ready for use on your Linux Machine.