There was indeed a flight warning computer software change that sped up the system's ability to sense a control malfunction during the control check.
And before anyone lays it on the LH F/O, who was indeed the last line of defense in a system where many errors led up to the incident, you might want to ask yourself if you have ever looked at something and saw you expected to see, only to later realize that what you saw and what was really there were two different things. It's called "expectation bias", and it's been cited as a factor in several incidents and accidents. Prior to the LH incident, none of us who flew Airbus FBW aircraft were aware that any such problem was possible, but our senses were certainly piqued once we learned what had happened that day.