First off I am new to efi live I just purchase a V2 and am trying to get my stock tune off my 04 Lb7. Every time I try it gives me a error code of $0311. I tried unplugging everything not factor (indash,remote start) when I pull radio fuse I get a $0011 error. It has started the download a few times but then stops. I have also gotten a 0537 error witch I looked up and means it is lock but the very next time I tried I ght a $0311 so I don't know what is going on or what to try next. I did try the v2 on a buddys truck thinking it was faulty and it pulled his stock tune no problem. Any help would be great thanks