In this article it is explained on how to upgrade WordPress
Within WordPress the software has the ability to do a one-click upgrade within the admin dashboard.
Please note: Before you do any upgrades to your site it is strongly encouraged that you backup your site within your control panel
To begin the upgrade you can do the following:
- Login to the admin dashboard by going to http://<domain name>/wp-admin
- Select Dashboard, if it isn't already selected, > Updates
- At the top of the WordPress Updates page you will see a section that states An updated version of WordPress is Available
- Select Update Now
- After the upgrade you will be logged out and you will see a message stating that You have successfully updated WordPress!
Please note: If you have any third-party plugins or custom plugins they may not work and it is recommended that they get updated once WordPress is successfully upgraded