Updating shockwave player in firefox
To see if the Flash plugin is working and what version is being used, visit one of these pages: If Flash is not installed, this may trigger the Plug-in Finder Service, which you can use to download and install the Flash plugin on Windows (see below).
At time of writing, the Plug-in Finder Service is triggered but fails to install the Flash plugin on Linux or Mac OS in Firefox 3 and above (you will need to manually download and install the plugin).
After downloading the Flash installer, completely close your Mozilla application and run the installer.
In current versions, the INSTALL button is disabled until you check-mark the box in the Adobe Flash Player installation dialog where it says, "I have read and agree to the terms of the license agreement".
See this blogspot article for details, including a screenshot.
Starting with Flash Player 11.2 on Windows, an option for silent, automatic updates is selected by default when you install Flash.
Plug-ins can cause crashes and hangs and may contain security vulnerabilities.
Reinstall the Flash Player here: For Mac: If you are on Safari or Firefox: To remove the Flash Player, download the uninstaller here: the uninstaler to your desktop, then quit/exit any applications you have open.
Launch the uninstaller from your desktop and follow the instructions in the dialog boxes which appear.
  You can also see what version (if any) of the Flash plugin is being detected using about:plugins (see the linked article for details).
If Flash is installed and enabled, the about:plugins list will include an entry similar to the following: Shockwave Flash In Flash versions 11.2 and above, the file name includes the plugin version.
If you have installed the Flash plugin but it does not appear in the Add-ons Manager, open about:config and make sure that the preference has not been set to "false" (if it has, right-click on it and select Reset to set it back to "true").