So i have the phone up and registering to 3CX. However, I believe I have a firmware problem with the phone in that when I pickup the phone I have no dialtone. I realize this runs locally. Likewise when I try to change the ring volume or go into settings and change the ringtone the phone just locks up tight. The bars on the screen stick and all I can do is reboot it. I went looking for the "firmware" but it doesn't appear you can get this without having some special access to the polycom site? Any help would be appreciated.