You can find not bad reviews, functions of different devices on YouTube. I came here by accident after a month, when I had already reviewed a lot of pages on the Internet, bought VVDI Key Tool, X300DP and X6V8, and made keys for myself and my friends. After watching the review, listening and understanding became easier, and I can even criticize a little on the point. About the need to solder out in the absence of a mechanical ignition switch, you have directly generalized - many cars can beat the loss without such a procedure, although not all. I wrote myself a synopsis of the review, made only theses, the rest is cut out. I'll try to look, and drop you, maybe you will find useful information.