Updating NetBackup Client on Server

Running NBU 7.5.0.7 on RHEL 6.3.  Started with a base install of 7.1, then to 7.1.0.4, then 7.5, then 7.5.0.7.  The initial install and update completed without issue, so I went through the 7.5 and eventually the 7.5.0.7 updates.  Through all the processes I've installed the server and client software on the master server, but somewhere along the way the client stopped updating on the master server at 7.1.0.4.  Pushing the client to Linux servers pushes out version 7.1.0.4.  Symantec support suggests that I need to update the binaries on the server but their link doesn't provide the correct information.

Could someone reference the correct install, upgrade, admin guide that covers this?  Thank you in advance.