Hello Nikita,
let me just copy & paste the disclaimer you have to accept when attempting to download any UCS 4.x.x Software:
READ THESE NOTICES BEFORE ACCEPTING THE DOWNLOAD OF POLYCOM® UC SOFTWARE 4.0.x:
1) Before you can successfully install UC Software 4.0.x onto phones running Polycom® UCS released prior to version 4.0.0, you must perform a required upgrade procedure using the Polycom® Upgrader 4.0.0 Utility.
Before you download and install Polycom® UC Software version 4.0.x or higher, Polycom strongly recommends that you review the changes to the upgrade procedures detailed in the Polycom® UC Software 4.0.0 Administrators’ Guide or newer and Engineering Advisory 64731 Polycom® UC Software 4.0.0: Upgrade and Downgrade Methods.
For further follow up questions please read the linked documentation and / or the relevant UCS Admin Guide.
There have been a few post's within the community around the updater / upgrader you should be able to find utilizing the community search.
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.
----------------
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
