Solved T46S FW. 66.86.05 in 3CX but 66.86.0.15 on phone web page

[Tymleeone]

I have 7 T46S phones that show as FW version 66.86.0.5 in 3CX but the phones show 66.86.0.15 when you login to the web portal. The phones are getting factory reset every day and must be reassigned to their extension in 3CX. While assigned they work with no issues. I have tried to reinstall the firmware from 3CX manually on the phones with no luck. Server is running 18.0 Update 9 Build 31.

 

[TheodorosG_3CX]

This seems to be isolated to the device.
In this case you need to report this to Yealink.

 

[Tymleeone]

seven phones all behaving the same way? Why do they all reset at the same time?

 

[Tymleeone]

THe phones worked fine until we spilt these seven phones on to a new 3CX server for this location and had to update the firmware from 66.83 to 66.84 then 3Cx auto updated them from there.

 

[TheodorosG_3CX]

The PBX would not auto-updated the firmware. Did you configured any DHCP option 66 on this location?

 

[Tymleeone]

There was an Option 66 from long ago. I have removed this from DHCP and will watch and see it this resolves the issue with the phones going to no service.

 

[TheodorosG_3CX]

Let us know the outcome.

 

[Tymleeone]

So, after watching for a few days after deleting DHCP option 66 it seems like the phones dropping was caused by an old option 66. I will continue working on the firmware issue.

 

[TheodorosG_3CX]

Good to know that this is resolved