Is it possible to upgrade WordPress version 2.8.5 to 3.9.2? I am trying to upgrade but the WordPress give me the link to download the latest version of WordPress. If it is possible, how am I going to upgrade my version 2.8.5 to 3.9.5?
Thanks in advance.
http://your-domain.com/wp-admin/update-core.php and look for the heading "An updated version of WordPress is available."
Below that there should a button for "Update Now". You can update by hitting that button.
If it's not there then you will have to manually update your website. For that instructions are here. https://codex.wordpress.org/Updating_WordPress#Manual_Update