Users Guide

NOTE: While using Lifecycle Controller to update the Power Supply Unit (PSU) firmware, the system turns off after the

first task. It takes a couple of minutes to update the PSU firmware, and then automatically turns on the server.

Firmware rollback

Lifecycle Controller allows you to roll back to a previously installed version of component firmware such as BIOS, iDRAC with Lifecycle

Controller, RAID Controller, NIC, Enclosure, Backplane, Fibre Channel cards, BOSS-S1, NVDIMM, and Power Supply Unit (PSU). Use this

feature if you are facing an issue in the current version, and want to revert to the previously‑installed version.

All servers supported by this release have a single iDRAC and Lifecycle Controller firmware. Rolling back the iDRAC firmware also rolls

back the Lifecycle Controller firmware.

• Dell Diagnostics, operating system driver packs, CPLD, and operating system collector tool cannot be rolled back to earlier versions.

• The earlier version is available only if the component firmware is updated at least once to a different version.

• Except for iDRAC firmware, the earlier version of the firmware is not displayed if the current version and the earlier version are the

same.

• Every time a firmware image is updated, the earlier version of the firmware image is backed up.

• 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.

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.

Firmware update