I also use its testing builds which are known as Firefox Nightly builds in my machines to test drive its new features and changes.

I have been using Mozilla Firefox since its initial versions. It’s also my favorite web browser and I use in it all computers present in my home, office and testing labs. Mozilla Firefox is one of the best and most popular web browsers available on Internet. The channel changer does not affect your profile, so your tabs and other settings should all remain the same.NOTE: The download links given in this article will always download offline installers for the latest version of Mozilla Firefox. Mozilla has explained more about how the channel changer works in an article on its site. You can confirm this by going back to Help, then About. When Firefox restarts, it ought to be running the new channel you've chosen. Choose the new channel you want to use, then select the Apply and Update button below. Change.' Click Change, and the window shows the change channel drop-down. The first sentence below the version information reads, 'You are currently on the Aurora update channel. Go to the menu button, then Help, and choose About Aurora. To change Firefox channels, you must first be running the Aurora version. Cutting-edge Chrome Canary arrives for Mac Opera Next makes it easier to get 'dev' Firefox Aurora debuts, Mozilla's 'dev' channel

Choosing the Release version of Firefox currently makes no changes to the browser, likely because Firefox 4.0.1 was released before the channel changer code was introduced. An actual beta release is expected in the coming weeks. Mozilla noted in a blog post that the switch points to a mirrored copy of Aurora as the Beta release. Change the channel and restart the browser, and the version that opens ought to be the new channel. Released in today's Aurora update (download for Windows | Mac | Linux), the benefit of the built-in channel changer is that users who want to see what's coming in future versions of Firefox can now do so without having to download a separate installer. Just a few weeks after the first release of Firefox Aurora, Mozilla's 'developer's' build of Firefox, the browser maker debuted a switch that lets users switch on the fly among Aurora, Beta, and Release versions of the browser. Firefox Aurora now comes with a built-in channel changer to switch between releases without having to download a separate installer.

Mozilla firefox update channels