Settings > General > Updates tab.
Alert Commander will compare the software and firmware version dates recorded on your PC with the latest versions available online. If your PC shows an older date for either one or both of these, the Commander will offer to download and install the latest version.
When you click on the Check for Updates button. Commander will automatically check to see if you have the latest software. A message will display on the screen to inform you if your software version is up-to-date.