How to Install Flash Player Plugins for Firefox
Installing the Adobe Flash player plug-in in the Mozilla Firefox Web browser is a simple process handled by the built-in Firefox Plug-in Finder Service. If the Flash plug-in is not present when attempting to view a website that uses Flash, Firefox will launch the Plug-in Finder Service and provide a straightforward wizard for installing and enabling Flash in the browser.
Launch "Firefox," and navigate to the Adobe Flash information page. Numerous Flash elements exist on this website, ensuring that the Plug-in Finder Service is launched.
Click "Install Missing Plug-ins" after the page loads, and the Plug-in Finder Service alert ribbon is displayed.
Click "Next" once Firefox completes scanning your system for installed plug-ins.
Select "Adobe Flash Player," and then click "Next."
Click "I Agree" to consent to the Adobe license agreement for Flash, and then click "Next."
Click "Finish" once installation is complete.