How do I upgrade my server from 2.11 to 2.15?
 

How do I upgrade my spearhead server from 2.11 to 2.15?? I think I gotta do it via ftp, like I do everything else...but I only see how I can put the installation file in, Im not sure how to apply it, do I have to contact the server host compnay and have them do it for me?