You will need the NEC Uc Suite 6.1 exe file. You can get from your vendor. Put that in the default 'PackageShare' share on your server.
On the PCs, both the UC Suite Client and Outlook need to be closed, so I did that here.
Then the script uninstalls the 5.5 version of UC Suite.
Then installs the 6.1 version of the software.
Enjoy.
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