Changes

So as to use '''Firefox Nightly alongside other does not support downgrades, even though this may have worked in past versions of . If you install Firefox such as Dev EditionNightly and later downgrade to an earlier version, Release or ESR you need to create and use a separate may experience issues with Firefox if they share the same profile for Nighty. Our end-user support site has explanations on the process: [https://supportof data.mozilla.org/en-US/kb/using-dedicated-profile-firefox-nightly Using a dedicated profile for Firefox Nightly]'''

'''Until we support dedicated profiles per channel in the installer [https://bugzilla.mozilla.org/show_bug.cgi?id=1373244 Bug 1373244], so as to use Firefox Nightly alongside another version of Firefox such as Beta, Release or ESR you need to create and use a separate profile for Nighty!'''  Our end-user support site has explanations on the process: [https://support.mozilla.org/en-US/kb/using-dedicated-profile-firefox-nightly Using a dedicated profile for Firefox Nightly] You will find below additional OS specific instructions and as well as a video tutorialfor Windows.