How to Upgrade or Downgrade Polycom Firmware

This article explains how to upgrade or downgrade your Polycom phone with Polycom's publicly available provisioning server.

The publicly available provisioning server contains multiple firmware versions which can be utilized to quickly upgrade or downgrade your Polycom phone. 
The various directories on the server each contain a different version of the firmware.

To provision your Polycom Phone from the publicly available server:

  1. In the phones local menu's, select Menu or Home → Settings → Advanced (pass is 456) → Administration Settings → Network Configuration 
  2. Adjust DHCP as follows:
    • On a 3.x firmware Phone:  Main Menu → Settings → Advanced → Admin Settings → Network Configuration → DHCP Menu
    • On a 4.x/5.x firmware Phone:  Home Home Button → Settings → Advanced → Admin Settings → Network Configuration → Provisioning Server → DHCP Menu
    • Set the Boot Server as: Static
    • Set the BootSrv Type to:  IP Address
  3. From the Provisioning Server menu set the server type as:  HTTP
  4. Change the Server Address to: voipt2.polycom.com/XXX or 140.242.64.35/XXX

    1. Where XXX is the firmware version you are upgrading or downgrading to
    2. Available Firmware versions include:
  5. 541 523 417 406
    540 522 416 405
    533 520 4010 404
    532 513 409 335
    531 511 408 332
    530 418 407 dg

    For example, if you want to upgrade the phones firmware to version 416 you would enter:

    voipt2.polycom.com/416 or 140.242.64.35/416

    Or, if you want to upgrade the phones firmware to version 4010 you would enter:

    voipt2.polycom.com/4010 or 140.242.64.35/4010

    If you wanted to downgrade the the phones firmware from Version 4.X or 5.X to version 3.X, you would enter:

    voipt2.polycom.com/dg or 140.242.64.35/dg

    Note: the 1/A/a button on the phone changes the input type.  The leftmost character is the current input type.  For example, 1/A/a would be entering numbers where as A/a/1 would be input in upper case letters.

    After you have entered the correct server address and firmware version, be sure to exit the menus until you are prompted to save and reboot. 

    The phone may reboot a couple of times and present various statuses as it is downgrading or upgrading the firmware configuration.

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