To update WordPress automatically, follow these steps:
Backing up your Web site before updating is an important step in case something goes wrong with the upgrade. Give yourself some peace of mind knowing that you have a full copy of your Web site that can be restored, if needed. My advice is not to skip this step under any circumstances.
This prevents any plugin conflicts caused by the upgraded version of WordPress from affecting the upgrade process, and ensures that your Web site won't break after the upgrade is completed. More information on working with and managing plugins can be found in Book VII; for the purposes of this step, you can deactivate plugins by following these steps:
The Plugins page appears.
The WordPress Updates page appears.