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.

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.

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 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