Periodically developers may release security patches or extra functionality and your WordPress themed website will need to be updated. It’s important to keep it updated to avoid being hacked because you have outdated software. WordPress has an automatic update feature for minor releases in order to promote better security and streamline the process. These affect only core WordPress files and not your theme or plugins. Those need to be updated manually.
Your website administrator will be notified via email when your site is updated. If for some reason an automatic update can’t happen, your administrator will be notified as well. We recommend you always backup your site before doing any updates.
To update manually, go to your WordPress Dashboard. In the left-hand side bar, click on Updates. You’ll be taken to a page showing what updates need to be made, if any. Just click Update Now and WordPress will download the necessary fiels, validate them, and automatically update. From this page you can update themes and plugins also.
After you’ve completed updates, check your site again to make sure it’s working as you expect.