When you login to your WordPress admin, you may be asked to update to the latest version. When we develop our themes, we do not modify core files which means most of the time updates go off without a hitch. Same goes for plugins, we don’t modify core plugin functionality. That said, this is your website and you should never click that update button without having a current backup of your database and site files.
If you’re not sure how to backup your data, please submit a support request so we can backup and update your site.
Want to learn more about WordPress updates? Check out the codex here.