System BIOS and Cisco Integrated Management Controller
Firmware
Updating the BIOS and Cisco Integrated Management Controller Firmware
The BIOS and Cisco IMC firmware need not be upgraded when you first bring up the unit.
When you upgrade the BIOS firmware, you must also upgrade the Cisco IMC firmware to the same version
or the controller does not boot. Do not power off the controller until the BIOS and Cisco IMC firmware
are matching or the controller does not boot.
Cisco provides the Cisco Host Upgrade Utility to assist with simultaneously upgrading the BIOS, Cisco
IMC, and other firmware to compatible levels.
Caution
After the firmware is upgraded, do not reset the system to factory default. Doing so will delete the initial
BIOS setup and boot orders.
Warning
The controller uses firmware obtained from and certified by Cisco. Cisco provides release notes with each
firmware image.
The only supported method to update the firmware is using the Cisco Host Upgrade Utility.
Accessing System BIOS
Step 1
Enter the BIOS setup utility by pressing the F2 key when prompted during bootup.
The version and build of the current BIOS are displayed on the Main page of the utility.Note
Step 2
Use the arrow keys to select the BIOS menu page.
Step 3
Highlight the field to be modified by using the arrow keys.
Step 4
Press Enter to select the field that you want to change, and then modify the value in the field.
Step 5
Press the right arrow key until the Exit menu screen is displayed.
Step 6
Follow the instructions on the Exit menu screen to save your changes and exit the setup utility (or press F10). You can
exit without saving changes by pressing Esc.
Cisco 5520 Wireless Controller Installation Guide
9
Installing the Cisco 5520 Wireless Controller
System BIOS and Cisco Integrated Management Controller Firmware
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