3.6.4 update massively improves HUD
3.6.4 improves driver detection but what they don't mention is that they use driver detection to adjust the HUD projection to match your eye height.
I previously suffered from a dim or invisible HUD unless sitting way below my desired seat height, which seemed to be a common complaint. I had called service and they said this was related to my simultaneous issue of driver detection not working for me, as they used the driver camera to adjust the HUD projection. I kind of thought this was BS because even when driver detection worked for the first 10 minutes on a drive or rebooting or adjusting the steering wheel/seat etc the projection was always the same.
However I updated to 3.6.4 today and driver detection stayed on the entire drive allowing hands free driving, but I also noticed that wow the HUD was so much brighter and clear. Then I remembered what the phone rep said and it clicked! It's not noted in the release notes but if youve had issues with a low HUD projection and dim display see if it gets better after the update! It still seems not to calibrate to the highest sightlines but it appears much better than before, focusing at a middle height with higher elevations still visible, versus prior which seemed like it was optimal almost to the point where the top of the screen was flush to the hood.