Lookleft
No first hand knowledge, but my educated guess is that - based on when it would have been built - it had a higher tech Digital FDR with lots of parameters (the new ones have thousands of parameters).
I'm more concerned with the health of the FDR - it's not exactly unheard of that the FDR isn't working properly at the time of a crash. Checking the proper functions of the FDR (and voice recorders) is not a high priority for the maintenance types, even in the west.