Users Guide

An error message appears if:
• You do not have Server Control privilege to rollback any firmware other than the iDRAC or
Configure privilege to rollback iDRAC firmware.
• Firmware rollback is already in-progress in another session.
• Updates are staged to run or already in running state.
If Lifecycle Controller is disabled or in recovery state and you try to perform a firmware rollback for
any device other than iDRAC, an appropriate warning message is displayed along with steps to
enable Lifecycle Controller.
Rollback firmware using CMC web interface
To roll back using the CMC Web interface:
1. Log in to CMC Web interface.
2. Go to Server Overview → <server name>.
The Server Status page is displayed.
3. Click Launch iDRAC and perform device firmware rollback as mentioned in the Rollback firmware
using idrac web interface section.
Rollback firmware using RACADM
To rollback device firmware using racadm:
1. Check the rollback status and the FQDD using the swinventory command:
racadm swinventory
For the device for which you want to rollback the firmware, the Rollback Version must be
Available. Also, make a note of the FQDD.
2. Rollback the device firmware using:
racadm rollback <FQDD>
For more information, see iDRAC8 RACADM Command Line Interface Reference Guide available at
dell.com/idracmanuals.
Rollback firmware using Lifecycle Controller
For information, see Lifecycle Controller User’s Guide available at dell.com/idracmanuals.
Rollback firmware using Lifecycle Controller-Remote Services
For information, see Lifecycle Controller Remote Services Quick Start Guide available at dell.com/
idracmanuals.
Recovering iDRAC
iDRAC supports two operating system images to make sure a bootable iDRAC. In the event of an
unforeseen catastrophic error and you lose both boot paths:
• iDRAC bootloader detects that there is no bootable image.
• System Health and Identify LED is flashed at ~1/2 second rate. (LED is located on the back of a rack
and tower servers and on the front of a blade server.)
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