Install Firefox 4.0 Beta 2 in Ubuntu Lucid Lynx (10.04)

Firefox 4.0 beta is avaliable for lucid from PPA, to install it we need adding repository from PPA. go to terminal, login as root by type :

$ sudo su

add and update repository :

$ add-apt-repository ppa:ubuntu-mozilla-daily/ppa
$ apt-get update

Then install :

$ apt-get install firefox-4.0

Now you can use this browser, go to Applications > Internet > Shiretoko Web Browser

Happy Testing....!!