You can open up your style.css file and check the version near the very top of the file.
To upgrade, first download the latest version from your account – https://appfinite.com/my-account …Then delete the old version and upload the new version. Doing this of course will overwrite any changes/customizations you’ve made to your old theme files, so make sure and backup everything first. Also make sure you have the latest version of Genesis installed.
