Cisco 6800 Series Administration Manual page 166

Downgrade the Base Stations
Downgrade the Base Stations
Note You can downgrade the base stations running Firmware version 5.0(1) only to the latest branch of Firmware
version 4.8(1) SR1.
The firmware filename contains the version (v) and branch number (b). For example,
DBS-210_v0480_b0001.fwu is version 480 and branch 1. When you put the firmware version and branch
number into the Firmware Update page, you don't need the leading zeros.
Note During the downgrade, the base station LED flashes in the order green, red, green, and amber. Don't power
off the base station while the LED flashes. The downgrade may take about 30 minutes to 1 hour to complete
and reboot the base station.
Before you begin
Connect to the base station web page as described in
you have multiple base stations, you should sign into the primary base station.
You need to have completed
the Firmware Files to the TFTP, HTTP, or HTTPS Server, on page
Procedure
Step 1 Click Firmware Update.
Step 2
Check the check box for the option Enable legacy firmware naming.
Step 3 Enter the new firmware version in the Required version field for the base station.
Step 4
Enter the branch number in the Required branch field for the base station.
Step 5 Click Save/Start Update.
Step 6
Click Save in the pop-up window.
Step 7 In the warning window, click the browser Back arrow.
Step 8
Wait a few seconds, then click Syslog.
Step 9 Verify that you see the message Firmware upgrade started to version vvvv branch bbbb.
Where:
• vvvv is the version number.
• bbbb is the branch number.
After a few minutes, the base station will automatically reboot and you need to sign into the administration
page. When the handsets register with the base station, the base station downgrade is complete.
Cisco IP DECT 6800 Series Administration Guide
158
Sign in to the Administration Web Page, on page
Set Up the Firmware Update Parameters, on page 153 and Download and Copy
153.
Maintenance
42. If