Dell Lifecycle Controller 2 Release 1.4.0 User's Guide

Firmware Rollback

Lifecycle Controller allows you to roll back to a previously-installed version of component firmware such as BIOS, iDRAC, RAID Controller, NIC, Enclosure, Backplane, Fibre Channel cards, and Power Supply Unit. It is recommended to use this feature if you have a problem with the current version, and want to revert to the previously‑installed version.

The Dell Diagnostics, OS driver packs, CPLD, and Lifecycle Controller firmware 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.
Every time an 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, and the previous version will not be available. However, for iDRAC, 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. However, the previous version of PSU firmware is available if Lifecycle Controller Firmware Update feature or Lifecycle Controller-Remote Services is used to update the firmware.