Users Guide

● Every time a rollback operation is performed, the previously installed firmware becomes the current version. However,
for iDRAC, the previously installed version becomes the current version and the current version is stored as the previous
version.
● The earlier version of the firmware is available only if any of the following tools are used to update the firmware: Lifecycle
Controller Firmware Update feature, Lifecycle Controller-Remote Services, or the Dell Update Package (DUP) from
operating system.
NOTE:
○ When SEKM mode is enabled on a controller, iDRAC Firmware rollback shall fail when tried from a SEKM to a
non-SEKM iDRAC version. iDRAC Firmware rollback shall pass when done within the SEKM versions.
○ PERC firmware rollback to a non-SEKM version shall fail when SEKM encryption mode is enabled on PERC
controller.
Rolling back to previous firmware versions
You can roll back to earlier versions of a firmware using the Firmware Rollback wizard.
NOTE: If you update any firmware only once, the rollback feature provides the option to revert to the factory-installed
component firmware image. If you update the firmware more than once, the factory‑installed images are overwritten and
you cannot revert to them.
To roll back a firmware:
1. Start Lifecycle Controller. For more information, see Starting Lifecycle Controller
2. In the left pane, click Firmware Update.
3. In the right pane, click Launch Firmware Rollback.
The Firmware Rollback page displays a list of components for which roll back is available and the later versions are
selected by default.
NOTE: In Firmware Rollback page, the Component names may vary in iDRAC GUI and Lifecycle Controller GUI.
4. Select the required rollback image and click Apply.
After the update process is complete, the system may restart. When applying more than one update, the system may restart
between updates and launch back to Lifecycle Controller and continue updating.
Comparing firmware versions
To compare the version of the update or rollback with the version currently installed on the system, compare the versions in the
Current and Available fields:
● Component — Displays the name of the components. Select the check box corresponding to the component that you want
to update.
● Current — Displays the component version currently installed on the system.
● Available — Displays the version of the available firmware.
Updating or rolling back devices that affect Trusted Platform Module
settings
Enabling Trusted Platform Module (TPM) with pre-boot measurement enables the BitLocker protection on the system. When
BitLocker protection is enabled, updating or rolling back the components such as RAID controller, NIC, and BIOS require that
a recovery password is entered or a USB drive that contains a recovery key is inserted during the next system restart. For
information on how to set TPM settings, see the BIOS User Guide available at https://www.dell.com/support.
When Lifecycle Controller detects that TPM security is set to On with Pre-boot Measurements in the TPM version 1.2 or
TPM Security On in the TPM version 2.0, the message indicates that certain updates require the recovery password or USB
drive with the recovery key. The message also indicates components that affect the BitLocker.
You can choose not to update or roll back those components by navigating to the Select Updates page, and then clearing the
options for the appropriate components.
Firmware update
37