Headset Button Failure with Yealink T48S Firmware 66.85.0.5

[NWE]

Hi
Our phones just updated to the latest firmware. It appears that the button illumination no longer works for the headset hard button on the phone base.
This used to light up when the headset mode was active. The headset icon at the top of the screen still comes on, just no button light.

Can't see the icon when the screen has gone to sleep or from a distance.

Not a big deal, just a little annoying.

Thanks

 

[JohnS_3CX]

Hi NWE,

We checked this model on the above firmware, the headset button does light up green when pressed.

Perhaps it would be a good idea to factory reset the phone and reprovision it using our latest PBX edition and templates.