A greeting to all...I have to say that I am writing on behalf of a friend ...bought a rooster chinese of course ...says a v50 ... to make it work when the program and get to the screen must detach and reattach the usb cable, otherwise it should not be done ...this has read a couple of chroma and a corsa d 1.3 mjet without problems... now I ask you because personally I have no experience with the cock you can know in some way if the quality of this tool. .. maybe posting a picture of the ic..I don't know as much as you can say ... he is afraid to write and friendship leans to me ... but to make it more self-nn mi mind... about the outer box if you can serve, and a black square with a led. Thanks in advance