Updateing System Admin

So here is my problem. I am trying to update my modules and when I get to the Admin one it tells me that my version is too old to update to the new version. Error code is I am not sure on how to get this module to update.

yum update sysadmin

I am new at freepbx and I am not sure were to enter the yum commands? Can I do it from the GUI in freepbx?

You would enter that in via SSH

Tank you