Silent install / uninstall:<br>
<tt>/S</tt> or <tt>-ms</tt><br>
<tt>-ms</tt> - only works with Firefox 4.0 uninstall note: /S -ms is broken in not available when uninstalling Firefox 3.5 / 3.6 so use /S instead when uninstalling - {{Bug|506867}}<br>
Installation directory:<br>