#Click the menu button [[Image:Fx89menuButton]] at the right side of the Firefox toolbar, go to ''Help'', and select '''About Firefox'''.The ''About Mozilla Firefox'' window will open. #Firefox will check for updates automatically. If an update is available, it will be downloaded. #;[[Image:fx91AboutDownloadingUpdate|width=700]] #When the download is complete, click '''Restart to update Firefox'''. #;[[Image:fx91AboutRestartUpdate|width=700]]