Ok so We just got our 2018 DCT base with 1300 miles on it. I noticed it had 17.x.x.x.x software on it and the newest version was 19.x.x.x so I downloaded it and installed it. Before the upgrade, the shifting was a bit rough and Clunky is the best way to describe it, not the same as the 2020 demo I rode. All I can say is post 19.x.x.x.x software it now shifts like butter. Anyone else notice this? I saw the other software post but thought this was a bit different. I am glad it worked as Fred said if you do not have the old software do not install the new. I did not know that.