Firmware upgrade SIP Gateway

Occasional Visitor

Firmware upgrade SIP Gateway

Hi, is there any know issue with firmware 6.4.3 on Polycom VVX 201 and 411 and the Microsoft Teams SIP Gateway. On there page they list 6.3.1 as the approve firmware but this summer all my phone upgrade to 6.4.3 and the line is now not registered.


Example of serial VVX 201 in my environnement :  64167F874D9E

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Polycom Employee & Community Manager

Re: Firmware upgrade SIP Gateway

Hello @Josua ,

The community contains individual sections dealing with the different products we offer Voice, Audio/Video, UC Infrastructure or Others .

Your post or the post you replied to was not related to the original poster's question and has therefore already been moved.

Please try to find related posts or create a new post

Your post was not deleted!

From our FAQ:


Feb 02, 2016 Question: How can I prevent a Poly Phone to be downgraded/upgraded or change settings automatically via Skype for Business and/or Microsoft Teams 3PIP gateway?

Resolution: For Skype for Busines please download, unpack and import the attached LyncProvisionDeviceParams. For Microsoft Teams 3PIP gateway in addition please set the EnableDeviceUpdate to false as explained => here <=


The question should actually be asked in a Microsoft-related forum and/or Microsoft support as they host the platform you are using and they look after the configuration.


Best regards


Steffen Baier


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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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.
Please also ensure you always check the VoIP , Video Endpoint , Microsoft Voice , PSTN or other FAQ's in the different sections
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