HOW TO UPGRADE WORDPRESS
This HOW TO post is designed to help you safely and easily upgrade your WordPress installation. Simply follow along with the steps and photos, and you can upgrade your WordPress website yourself.
NOTE: Prior to upgrading WordPress, it is highly recommended that you make a backup of your software and a backup of your database. While 99% of the time things will go smoothly, there is that 1% chance and not having a backup could be costly!