Solved Not Supported 66.83.0.35

[slowsquirrel]

We just bought 10 new Yealink T48S and they work great but 3CX says under phones the firmware is not supported. What do I do?

 

[Allen_Miller]

Have you tried doing a firmware upgrade from the Phones/Management Console?

 

[StefanW]

The firmware is older then 3CX has tested v16 with.
Here you can see the current Firmwares 3CX ships: https://www.3cx.com/support/phone-firmwares/

 

[slowsquirrel]

We did the firmware upgrade on the new phones and it worked. We are now at 66.83.0.55