Click on the Tools tab, then Module Admin, then on the Module Administration page click on Check for updates online. You can click on “Upgrade all” at the bottom of the page to get all the upgrades, then click on any uninstalled modules that you want to install, then click on Process when you are finished. Don’t forget to click the orange bar when you are all through. Oh, and if you ever find and install a module to upgrade to a new version of FreePBX, be sure to read the instructions it will show you and follow them exactly.