The LTE was going in/out on my mx100 yesterday. Maps would not update, I was getting grey tiles. The streaming radio wouldn’t stream.
I’m MCU2 and was on 18.6.
I did a scroll wheel reset (which actually did reset this time!) and both screens went off and turned back on.
The issue resolved and LTE was solid.
Then last night I had the update to 2018.14.
That’s just my experience.