Well they did it... dropped it off at noon and picked it up a day later from Decatur GA SC with HW3 installed and cameras 80% calibrated (only took 5 minutes driving to finish calibration). So far it appears to have completely eliminated the previous ping ponging during auto-pilot I have experienced since a few months ago. It drives much smoother and more confidently and seems to react much quicker to what the cars around me are doing. It is also really great to see the FSD visualizations progress which is very accurate in all that it identifies so far. In all it is a huge upgrade in terms of perceived stability and performance. None of the non autopilot settings got messed with but I did have to enable again all the auto-pilot settings and reconnect bluetooth and wifi as others have mentioned. Additionally I am now getting stronger bluetooth, wifi and cellular signals. One step closer to FSD!