To upgrade manually using an agent that you download from the Palo Alto Networks
          Customer Support Portal: 
         For Windows endpoints, you can obtain the update by navigating to Software Updates
              in the 
Customer Support Portal. Search for
                
GlobalProtect Autonomous DEM for Windows64. 
 For Mac OS X endpoints, you can obtain the update by navigating to Software Updates
              in the 
Customer Support Portal. Search for
                
GlobalProtect Autonomous DEM for OS X.