While it is being updating
When a new version of Word Press is available you will receive an update message in your Word Press Admin Screens.To update Word Press, click the link in this message.
While it is being updating video
WARNING: The upgrade process will affect all files and folders included in the main Word Press installation.
This includes all the core files used to run Word Press.
If you have made any modifications to those files, your changes will be lost.
You should always update Word Press to the latest version.
Most sites are now able to automatically apply these updates in the background.
If your site is capable of one-click updates without entering FTP credentials, then your site should be able to update from 3.7 to 3.7.1, 3.7.2, etc.
(You’ll still need to click “Update Now” for major feature releases.) See Also: Configuring Automatic Background Updates Modern versions of Word Press let you update with the click of a button.
If you are updating across multiple versions, follow the procedure at Upgrading Word Press - Extended Instructions Before you get started, it's a good idea to back up your website.
This means if there are any issues you can restore your website.