How to Update a WordPress Plugin
Step 1: Log in to your WordPress site as an Administrator
Here you login to your site as an admin. Hopefully, you are already well-versed in logging into your WordPress site as an administrator
Step 2: Access Updates
In case there is an update for a plugin or a theme, it is likely to be on the top bar next to updates, CLICK ON THE UPDATES
Check the box for Select All:
Step 4: Update the Plugins
Click on Update Plugins:
And at the end of the update process, you should receive something similar to, All updates have been completed.
Step 5: Verify the Update
If you want to be absolutely sure your version is updated, you can click on Plugins and then verify that WP Super Cache is at least version 1.4.4.