To know the latest version of your MT4 platform, go to "help" on your MT4 platform then click "About" that is the latest version of your MT4 platform. Please see screenshot below: 

If in case a new version of the MT4 platform is released, the platform will often ask you to update. If you are not receiving these updates, the issue could be related to a firewall or your computer settings.   
 

If you need to force an update, please close the platform and on the desktop right-click on the Fusion Markets MT4 icon and click ‘Open as Administrator’. If you’re not having success, please contact us.