Originally Posted by e350 coupe
There is no other logical answer as to why the software and build dates do not coincide.
The Ford diagnostic system (IDS) that the dealers use is updated periodically (usually every 1 to 2 months).
When a new calibration (module firmware) is available, the IDS system "doesn't know about it" until it is updated to the latest revision.
Why did they "recall" the September update?
Nothing was wrong with the new PCM/TCM firmware. The problem was with the reflashing procedure used by the version of IDS that was current at that time. The next version of IDS (available in early October) fixed that problem.