Hello ABTTech,
you may want to use a currently supported software like UC Software 5.5.1 or if you insist in the 5.4.x range use 5.4.5 instead.
The next step after testing this would be opening a ticket.
In order to raise a support ticket you need to work with your Polycom reseller as they need to do this for you.
If this is some sort of an Internet discounter please post your phone's MAC address so I can look up who would be able to support you.
Please ensure to provide some feedback if this reply has helped you so other users can profit from your experience.
Best Regards
Steffen Baier
Polycom Global Services