

Update: The FTP alternative is no longer available. Mozilla removed the add-ons directory from the FTP server.


The add-ons manager should now display the installed version and not the latest one. If the add-on is compatible, you can install the extension from Mozilla's site directly and restart the browser afterward to complete the process. Release notes are usually offered for every version listed on the version history page but these are managed by the extension developer some offer detailed information while others may not provide information at all. While it is possible to download these add-on versions, it may not be possible to install them in the Firefox web browser. Note that older versions of add-ons may not be compatible with the version of Firefox.
