Plantronics + Polycom.
Now together as
I have a PTC that is currently at 1.5 for HDX series and I am trying to upgrade it to 4.2.0 for Group series.
I have a Group 500 that is currently at 4.2.0, I have tried to update the PTC using a USB stick.
This did not change the software so that I can pair it with my group 500. The PTC has hardware version 5
is this possible?