You can now use the in-place upgrade method to upgrade your server to the newer version. The in-place upgrade method upgrades the server to the same directory on your computer where the server was originally installed. This method does not require you to install a new instance of the server or database and migrate artifacts, global variables, and history data.
Note: The in-place upgrade method is applicable only for upgrading the server from r11.3 or higher.
Hope this helps!