Hi, I have a used Bulldog 40415 I got off Ebay $300 shipped (the only place that would ship to Calif because our "moral Superiors" won't allow us to have nice things). Problem is it will not install the file to the ECM giving code 440 (an unknown error). Monitoring works fine but the BD update is for 2005-2013 Xterra, I have a 2014. I will call them my next day off. Has anyone successfully used the 40415 on a 2014 X? And what if any custom settings do you use?