Yes,
There are two ways to install / upgrade SEP.
1) Using the autoupgrade feature for the existing SEP clients.
2) Create a new package from the SEPM for the latest version and push it to the clients. This will also upgrade SEP version
Creating custom Windows client installation packages in the Endpoint Protection Manager
https://support.symantec.com/en_US/article.TECH165801.html
follow the third step in the above document and push it using deployment wizard, thats it