My issues with the TFT-Combi...
BLUETOOTH:
Not going to rehash what everybody already knows about the bluetooth, Nav 6 into the equation breaks everything, and without it, a non BMW helmet loses some functionnality. my setup displays the same behavior (iPhone 7plus, Nav 6, Shubert C3Pro with SRC pro 1.1).
CONNECTED APP:
While I was trying to get all my bluetooth gear to play nice together, I somehow broke something with the Connected app on my iPhone, now, albeit the iPhone and the Combi are connected and they work, I have no nav, plus the music page doesn't display album cover anymore, and the bike info on the app are not updated anymore, but the trips are recorded, even when I travel by car (which is not a BMW car).
FUEL GAUGE:
Since I took delivery of my TFT Rallye, I too experienced a rather aggressive reserve calculation on my dash. Usually, after a fillup, the bike displays a range of 260 km (never more, looks like a hard coded max value). Range stays at this max value for a while then begin to drop, and reserves shows off way early, usually when I am around the 200 km mark. It seems to get a little better with the time. On my previous BMW, I was getting the reserve warning at around 70/80 km left, now it is closer to 100(1/3 range).
TFT COMBI DISPLAY
Now, what's more disconcerting, and it has happened twice to me so far, is the display not lighting up at all(i.e. not displaying any image, but at night, you can see that the backlighting works, it's not a physical connexion issue is seems). It seems to do the pre-check (but I'm not sure all physical lights are fired up when it happens, have a hunch they do not). Everything works, the ESA is not in limp mode, the fueling is on the same mode I left it. I didn't try to change any settings tho. Happened when bike was stored in a dry / warm place, battery looks fine as the bike still start up first try when this happens.
TFT UPDATE:
TL;DR : My dealership did hook up my dash to their diagnostic computer and no update available as of today, at least in Switzerland. They have no info about an upcoming update either, they have not had any custommer report the same issue I have.
CONCLUSION :
...and it's not a real surprise...
This thing is far from mature. Very cool and slick but still a bit rough around the edges. I'm still happy I went for the TFT, and given that Winter Is Coming(c), not too bummed for now... BMW and BOSH have 4 months to get this thing to work as advertised...
