I think mine has reset a few times. Just haven't gotten around to looking into it, and have assumed I'm doing something wrong that's causing it to reset. Hope it's not a software bug. I have an early 2016 X.
I borrowed the diagnostic device and got the necessary software from the dealer and did it myself. But mine is MY13, so anything newer should not have this issue. Or could it be that they only produced this patch for the MY13 but did not fix it in the newer firmware version.