HP MSA 1040 SMU Reference Guide (762784-001, March 2014)

34 Getting started
If the firmware in neither controller has the proper midplane serial number then the newer firmware version in
either controller is transferred to the other controller.
For information about the procedures to update firmware in controller modules, expansion modules, and disk drives,
see "Updating firmware" (page 79). That topic also describes how to use the activity progress interface to view
detailed information about the progress of a firmware-update operation.