Specifications

Send document comments to [e-mail]
2-19
Cisco UCS C460 Server Installation and Service Guide
OL-22326-01
Chapter 2 Installing the Server
Configuring BIOS Settings and Updating BIOS Firmware
Recovering a Corrupt BIOS
There are two ways that you can recover a corrupted BIOS:
• You can use the CIMC management interface, either GUI or CLI. For instructions, refer to the Cisco
UCS C-Series Rack-Mount Server Configuration Guide or the Cisco UCS C-Series Rack-Mount
Server CLI Configuration Guide.
• You can use the BIOS recovery function of header J6D1 on the motherboard. For instructions, refer
to the
“Using a BIOS Recovery Jumper on Header J6D1” section on page 2-19.
Using a BIOS Recovery Jumper on Header J6D1
The J6D1 header is a 3-pin header on the motherboard (see Figure 2-6 on page 2-20). You can use a
jumper on this header to force the server to flash a new BIOS, in the case of a system hang. For example,
if the system hangs after a BIOS update, use this procedure to force the server to look for the new
firmware.
Step 1 Download the BIOS update package for the server from Cisco.com and extract it to a temporary location.
Click Unified Computing at the following URL and navigate to the download.
http://www.cisco.com/cisco/web/download/index.html
Step 2 Copy the contents of the extracted UEFI folder to the root directory a USB thumb drive.
Step 3 Power off the server as described in the “Shutting Down and Powering Off the Server” section on
page 3-6.
Step 4 Slide the server out the front of the rack far enough so that you can remove the top cover. You might
have to detach cables from the rear panel to provide clearance.
Caution If you cannot safely view and access the component, remove the server from the rack.
Step 5 Remove the top cover as described in the “Removing and Replacing the Server Top Cover” section on
page 3-7.
Step 6 Move the shorting jumper to pins 2 and 3 of the J6D1 header (see Figure 2-6 on page 2-20).
Step 7 Replace the top cover.
Step 8 Insert the USB thumb drive into a USB port on the server.
Step 9 Return the server to main power mode by pressing the Power button on the front panel. The server is in
main power mode when the Power LED is green.
Note You must allow the entire server to reboot to main power mode to complete the recovery. This
is because the state of the jumper cannot be determined without the host CPU running. The
server automatically boots into the UEFI shell and updates the BIOS from the USB thumb drive.
Step 10 Wait for server to complete the BIOS update, then remove the USB thumb drive from the server.
Step 11 Press the Power button to shut down the server to standby power mode.
Step 12 Remove the top cover from the server.
Step 13 Replace the shorting jumper to the default pins 1 and 2 of the J6D1 header.