* Download a released Fx15012 build from here: http://releases.mozilla.org/pub/mozilla.org/firefox/releases/1.5.0.12/
* Install it, and then change the update channel to ''releasetest'' in the channel-prefs.js file found in C:/Program Files/Mozilla Firefox/defaults/pref/channel-prefs.js
** <pre>pref("app.update.channel", "releasetest");</pre>
* Restart the browser and select Check for Updates from the Help menu.
* '''NOTE:''' This is for MU testing purposes only. Please do not modify any files if you are not actively testing with the Mozilla QA team. Thanks!