Yealink T46G Administrator's Manual page 371

How can I verify the firmware generation and version of the Skype for
Business phone?
Press the OK key when the Skype for Business phone is idle to check the firmware version. For
example: 28.8.0.50.
1
2
3
4
Why doesn't the Skype for Business phone update the configuration?
Do one of the following:
Ensure that the configuration is set correctly.

Reboot the Skype for Business phone. Some configurations require a reboot to take effect.

Ensure that the configuration is applicable to the Skype for Business phone model.

The configuration may depend on support from a server.

Item
A fixed number for each Skype for Business
phone model.
35: T48G

28
28: T46G

29: T42G/T41P

54: T40P

Firmware generation.
8 Note: The larger it is, the newer the firmware
generation is.
0 A fixed number.
Firmware version.
50 Note: With the same firmware generation, the
larger it is, the newer the firmware version is.
Description
Troubleshooting
357