Upgrading Aras Innovator Version 11 Service Pack Versions

Hi all,

We are currently on Aras Innovator Version 11.0 SP9. From my understanding, the latest service pack available for Version 11.0 is SP15.

My question is, is it still possible to upgrade from SP9 to SP15? If so, what would be the effort/duration required to do so? Is it a complicated procedure or a relatively simple one? 

Thanks!