A backup would most likely show us that you have specified the Update Server via the Web UI:
Utilities > Software Upgrade
Simply clicking on "Clear Upgrade Server" should remove this.
Another reason may be this:
Feb 02, 2016 Question: How can I prevent a Poly Phone to be downgraded/upgraded automatically via Skype for Business and/or Office365?
Resolution: For Skype for Busines please download, unpack and import the attached LyncProvisionDeviceParams. For Skype for Business Online / O365 in addition please set the EnableDeviceUpdate to false as explained => here <=
Please ensure to provide some feedback if this reply has helped you so other users can profit from your experience.
If official support is required please check how to phone or open a case here
---------------- The title Poly Employee & Community Manager is a community setting and does not reflect my role. I am just a simple volunteer in the community like everybody else. All posts and words are my own & do not represent the views of Employer.
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