Yealink Lydis: Hotdesking not working after upgrade / wrong version after upgrade

[KennethVH]

Hi,

We did push a upgrade from 66.85.188.5 to 66.86.186.1 for Yealink T41S en T42S.
When doing this the phone is upgrading to this version, but directly after boot & provisioning it automatically upgrades to 66.86.186.2.
The problem with this version is that it's not supported and seems to break hotdesking. Users can use the dial code and get the message that they are logged on, and on the 3CX server we actually see that the user is logged in, but the device does not provision and show it.

When logging into the webinterface of the device the provision URL is missing, and when setting this manually it does downgrade again to 66.86.186.1, and everything starts back working again.

It does not make sense why selecting 66.86.186.1 as firmware does automatically upgrade is to .2?
We can replicate this issue on devices that are not yet upgraded.

Anyone else experiencing this issue?

 

[KennethVH]

It seems that the provision url changes to updateyealink.com after restart, this is from Lydis. I will also contact them to see why this is.

 

[KennethVH]

It seems that 66.86.186.1 has a bug where the provision URL gets rewriten and that 66.86.186.2 has this fixed.
Lydis still needs to provide the 66.86.186.2 firmware to 3CX.