how to install firefox 6 on ubuntu

After weeks of testing on the Firefox Aurora channel, the next version of Firefox(Firefox 6.0) is already available in the Mozilla Firefox beta channel.Installing Firefox 6 beta in Ubuntu has not been easy, until now

 Install firefox 6 on ubuntu
Open the terminal and run the following commands

 sudo add-apt-repository ppa:mozillateam/firefox-stable
sudo apt-get update
sudo apt-get upgrade

Localize your firefox 6 using the following command

 sudo apt-get install firefox-locale-$code

where code is the two-letter symbol of your language 

watch this video :how to install firefox 6 on ubuntu