I recently bought polycom 650 and as I see it has Revision - 5.0.2( PolycomSoundPointIP-SPIP_650-UA/22.214.171.12492 Type/Updater) WHta does that mean? What is 5.0.2 - Updater?
let me just copy & paste the disclaimer you have to accept when attempting to download any UCS 4.x.x Software:
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.