Im looking at Tesla Firmware Upgrade Tracker Web App and the newest I'm seeing there is 2017.38.4 be12575. No sign of any 2017.40.1 updates.
Where are you seeing the 2017.40.1 data?
It is no longer there, so maybe someone put in wrong information or maybe someone wasn't suppose to release that information so they had it removed... @HankLloydRight might know what happened to it.