This post explains the steps to perform an update of the Lync Phone Edition device.
In this scenario the phone is a HP4120 connected to Lync Server 2010.
Download and extract the last update
Import the cab file (Import-CsDeviceUpdate)
To import the cab file, a Lync powershell command must be executed:
PS C:\> Import-CsDeviceUpdate -Identity service:WebServer:mylyncserver.mydomain.com -FileName C:\Soft\UPDATE-4.0.7577.4487\ucupdates.cab
Test the update
Before putting into production, the update can be tested using some test devices. The devices configured as the test ones will be updated automatically so that we can confirm if any issue appears or everything goes ok.
Put the update into production
After confirming the update works correctly, its time to update every device of our environment.
Same as the test devices: The update will be installed after some minutes of inactivity of the device or sometimes can be forced by restarting it.