How to switch update channels in firefox

To know more about new development channels and repositories for rapid releases in firefox Click Here

Aurora: Newest innovations in an unstable environment
Beta: Aurora features but with more stability
Release: Tried and tested final release

To switch update channels in firefox
1.Click firefox button, select Help and click About Firefox.

2.click the Change link.
3.Click the drop-down menu to select the Release, Beta or Aurora channel.
4.Click Apply and Update and then click apply Update after the download.