Updated the Model X to Firmware 2.11.54 (7.1 still). I've noticed that it seems that Tesla currently is on about a 7-8 day update cycle with the Model X firmware: Our first update 7.0 build 2.10.26 received on 1-15, next update 7.1 build 2.10.56 on 1-22, next update 7.1 build 2.10.71 on 1-30 and finally 7.1 build 2.11.54 February 8th.
My observations about 2.11.54:
Autopilot - much, much more solid. Car holds it's line much truer and seems to track much better. Braking is more smooth and in general I have way more confidence in 2.11.54 Autopilot than I did in 2.10.56. Maybe they are in the process of tweaking some variables based on the Model X driving dynamics compared to the S. What ever Tesla did, it worked!
Falcon Wing Doors (FaWD): Seems to be much improved from a stability of function perspective. Previous to this update, we had a problem with our Passenger side FaWD sensor with false readings which would restrict the opening arc. It seemed to be exacerbated by lower temperatures, which I believed were causing some flex in the body panel as different structural parts shrank and expanded at differing rates, which caused the body panel to flex out of the initial software tolerance they programmed into the sensor program (I believe this was our specific issue in our door, but I'm sure there are many other conditions that caused errors in the fleet). Today we have not experienced any of the frequent errors we had before the update. The update also added more functional control of the FaWD by giving us two potential default opening settings to choose from (Fully open and 2/3rd open (I'd call that Umbrella mode to help shelter people and the car interior more from harsh weather conditions). In addition the partial opening mode makes opening and closing the FaWD's a bit quicker by shrinking the arc distance they have to travel. You can also pause the doors at any point in the opening/closing cycle now.
Auto open/close driver side front door: Function here added/improved. Prior to the update you had to press the touchscreen, pull the interior handle or press the exterior door handle to mechanically open the front driver door. To mechanically close it you could press on the brake, pull on the interior handle, squeeze the doorframe and exterior handle or use the touch screen. Tesla added the 'butler' function - Unlock the car with the keyfob and walk towards it at the right angle and the driver side door will automagically present itself open to you. Walk away from the car and manually lock it with the fob and the door automagically closes. I haven't tested the autoclose with the walk-away-door lock function yet, but I believe the door will autoclose when the car detects the keyfob away from it a certain distance. When it locks based on the walk-away-lock, it should closed the door as well.
Feature removed - 2nd row seat movement through the touchscreen - Tesla took out the controls to move the 2nd row seats forward and backwards from the touch screen. I believe it will return in a future update. My guess is there were seat errors that people were reporting that were really being caused by people moving the 2nd row seats with the touch screen and not understanding how it was initially intended to function. I think the controls were simply to move the seats all the way forward to let someone in the 3rd row and then meant to move the seats completely back (by holding the back arrow) to it's locked position. But I used it at first to try to adjust the seat distance and it kept throwing up 2nd seat row unlocked errors. It probably caused more X owners to report 2nd seat row malfunctions than necessary. So back to the coders the function goes to iron out the UI and functionality.
Before this latest update I had strong concerns about the FaWD from a stability standpoint. Granted, we've only had 2.11.54 for a day, but so far it seems as if this one update has remedied our FaWD issues and instilled a renewed confidence in the overall quality and functionality of the Model X. I now personally believe that the reports of issues with FaWD we've seen on the forums and other places can be fixed primarily with software and will not require much, if any redesign or re-engineering of the FaWD sensors or mechanisms. Check back with me in about a month to see if I still hold that same opinion, but the early stage review here is very positive.