Cisco 7920 Administration Manual page 198

Installing the New Firmware Image with Cisco CallManager 3.3(3) Service Release 1 and Later
Procedure
Step 1 Download the firmware installation file cmterm-7920-sccp.x-x-x.exe from
Cisco.com at the following URL:
http://www.cisco.com/cgi-bin/tablebuild.pl/ip-7900ser-crypto
Double-click the .exe file to install the necessary firmware files in
Step 2
Cisco CallManager.
The version firmware image file and load ID file for the Cisco Wireless
IP Phone 7920 are copied into the Cisco CallManager TFTPPath directory.
Step 3 Log in to the Cisco CallManager Administration application.
From the menu bar, choose System > Device Defaults.
Step 4
The Device Defaults Configuration window appears.
Scroll down on the page to Cisco 7920 in the Device Type column. In the Load
Step 5
Information window, verify that the firmware image file name is the updated
version.
If the updated firmware image version is not in this field, update this entry.
Do not change any of the parameters of the firmware image file.
Note
If you need to downgrade the firmware to an earlier version, you must use the
Note
Cisco 7920 Configuration Utility to perform the downgrade. When downgrading
firmware, the phone configuration entries are lost and the phone resets to factory
defaults. You must reconfigure the phone with the Cisco 7920
Configuration Utility or by using the Network Config menu on the phone.
Cisco Wireless IP Phone 7920 Administration Guide for Cisco CallManager Release 3.3 or Later
C-2
Appendix C Updating Firmware for the Cisco Wireless IP Phone 7920
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