The Cisco 7920 Configuration Utility 3.0 requires firmware version 2.0 or later to be loaded on the Cisco Unified Wireless IP Phone 7920 as pre-2.0 firmware versions are incompatible with the 3.0 version of the Cisco 7920 Configuration Utility.
Installation Instructions:
If prompted for the driver, point to the install path.(i.e. C:\Program Files\Cisco\Cisco 7920 Configuration Utility\Cisco 7920 USB)
Refer to the Cisco Unified Wireless IP Phone 7920 Administration Guide for further information on the Cisco 7920 Configuration Utility.
Cisco Unified Wireless IP Phone 7920 Administrator Guide
http://www.cisco.com/univercd/cc/td/doc/product/voice/c_ipphon/english/wip7920/7920adm/index.htm
Release Notes for the Cisco
Unified Wireless IP Phone 7920
http://www.cisco.com/univercd/cc/td/doc/product/voice/c_ipphon/english/wip7920/relnotes/index.htm
Note: In order to use the Configuration Utility software, you must have a license. The purchase of the Cisco 7920 Series Configuration Utility
(CP-CFGPR-BUN-7920) will entitle you to use the software.