Can you possibly check the following path on your PC?
Do you see a file in that folder that is called "dfu-util.exe"?
If yes, please run it and see how it goes.
If the issue persists, please raise a ticket with Poly Support.
Farhan Siddiqui ----------------
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.
Notice: This community forum is not an official Poly support resource, thus responses from Poly employees, partners, and customers alike are best-effort in attempts to share learned knowledge. If you need immediate and/or official assistance please open a service ticket through your proper support channels. Please also ensure you always check the VoIP , Video Endpoint , Skype for Business , PSTN or RPM FAQ's