Disclosed is a system and method that resolves a mismatch between software versions executing on redundant controllers. A mismatch between a first software version executing on a first redundant controller and a second software version executing on a second redundant controller is identified. By comparing software version identifiers associated with the first software version, the second software version, and a stored system software identifier, a preferred software version is selected. The preferred software version is copied from a controller running the preferred software version to the other controllers.