Prevent Polycom Phone rolling back to old version - SFB Online.

[thet naing]

Noticed that after the firmware update is installed, Polycom phone rolls back to the previous version automatically.

I got a message on the Polycom Phone that says "there’s a new update available" it then automatically installs the old version."

The IP Phone rolls back to the old version 5.6.0.17325.

To prevent the phone from rolling back to the old version, run the following command after logging into SFB Online through PowerShell.

Set-CsIPPhonePolicy -EnableDeviceUpdate $False

It will take around 20 mins to 1 hr to take effect. 

[#2]

This does work - but it's worth noting that it is downgrading to the version of the software that Microsoft have currently certified for use with Skype online.  It is possible (although unlikely) that you may run into issues running a newer version that the recommended one.  Microsoft will eventually certify the newer versions of the software, and at that point your phones should auto-update.

[#3]

If you just want to prevent a single device from rolling back you can create a configuration (.cfg) file using the below code and then import it onto the phone:

<?xml version="1.0" encoding="utf-8" standalone="yes"?>

<PARAMETERS device.set="1" device.prov.lyncDeviceUpdateEnabled.set="1" device.prov.lyncDeviceUpdateEnabled="0" lync.provisionDeviceParams.enabled="0" />

Richard

[#4]

To clarify when an initial X.0 release is officially qualified for SfB then future X.1, X.2, X.3, etc are not re-qualified.   These newer releases are always recommended by default but Microsoft does not update the Device Update server for every version.

[#5]

Guidance for this is covered in this detailed article: 

http://blog.schertz.name/2016/02/polycom-phones-with-skype-for-business-online/

[#6]

Thanks for the clarification! I hadn't realised that point releases weren't automatically pushed

[#7]

@Jeff Schertz noted with thanks. So, what would be the best practice? 

1. Should we disable the Device Update ?
2. If we should, how we could ensure that the phone is always running on the newest/latest firmware? 

Thank you. 

[#8]

@Richard Jenner Thanks, it's instructive info. 

[#9]

1. Yes, I recommend to disable this until potential future changes can improve the behavior.

2. If you have a small number of phones then it's easy to remotely update the firmware from Polycom's Hosted update server online.  For managing multiple devices you can leverage a Provisioning Server.

[#10]

Thank you, @Jeff Schertz

[#11]

@Jeff Schertz Has your recommendation changed?