How To Install Firefox 7/9 On Ubuntu (11.10/11.04/10.10/10.04)

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The latest stable version for Mozilla is Firefox 7. If you want to test the future versions of Firefox which are still experimental (Firefox 9), then follow the instructions given below.

Firefox 7 Installation (Stable Release)

To install Firefox 7 on Ubuntu 11.10, then issue these commands:

sudo apt-get update
sudo apt-get upgrade

For Ubuntu 11.04/10.10/10.04, run simply these commands:

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

Or

sudo add-apt-repository ppa:ubuntu-mozilla-daily/firefox-aurora
sudo apt-get update
sudo apt-get install firefox


Firefox 9 Installation (Nightly Channel)

To install Firefox 9 (Nightly Channel) on Ubuntu 11.04, then issue these commands:

sudo add-apt-repository ppa:ubuntu-mozilla-daily/ppa
sudo apt-get update
sudo apt-get install firefox-trunk

To uninstall Firefox 9, then use this command:

sudo ppa-purge ppa:ubuntu-mozilla-daily/ppa

That's it!