Thursday, June 16, 2011

Firefox 4 Stable, Firefox 5 Beta and Firefox Nightly Builds (Lucid, Maverick & Natty)

In most cases, Canonical doesn't include major version updates into the official repositories for already released Ubuntu versions. That is only possible if Mozilla drops support for Firefox 3.6. At the time of this writing, you can only upgrade to Firefox 4 using custom PPAs.


Firefox 4 Stable (Lucid and Maverick)

Go to Applications > Accessories > Terminal and run these commands one-by-one:

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

Firefox 5 Beta (Lucid, Maverick and Natty)

Update: Firefox 5 stable now available in official Natty repositories and firefox-stable PPA.

http://ubuntu4beginners.blogspot.com/2011/06/firefox-5-stable-arrives-in-official.html

Mozilla has adopted a new development cycle just similar to Google Chrome. Major version releases would be more frequent now, every 6-12 months.

From this PPA, you can install Beta and Release Candidate versions of Firefox. Once the stable is released for a specific version, it would be moved to the firefox-stable PPA. Moreover, installation from this source would upgrade your current stable install of Firefox to Firefox 5 Beta.

For installation of Firefox 5 Beta, go to Applications > Accessories > Terminal and run these commands one-by-one:

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


Firefox Nightly Builds and stable, side-by-side (Lucid, Maverick and Natty)

You can now install Firefox Daily Builds side-by-side with your stable Firefox without messing or upgrading it. These Daily Builds are named firefox-trunk. But remember, installation from Nightly Builds PPA is only meant for testing purposes and the performance would be nowhere near to the stable one.

Go to Applications > Accessories > Terminal and run these commands one-by-one:

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


Removal & Downgrade

If you want to revert to the original Firefox version provided by default with your Ubuntu release, install the package ppa-purge. It is in the official repositories for Natty and Maverick. For Lucid, you'll need to enable the 'lucid-backports' repository from System > Administration > Software Sources > Updates tab.

sudo apt-get install ppa-purge
sudo ppa-purge ppa:mozillateam/firefox-stable

In the second command, change the line according to the PPA you actually used for installing whichever version of Firefox.

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