well i am not to sure what to make of this one , but its the first time in 4 years of using hp tuners its hapened to me .
here is what happened , 2007 clubsport with a t51 garrett turbo running maf , i decided to try 2008 clubsport o/s , i did a complete rewrite as i have done hundreds of time on early models , the car started fine but had a few dtc come up so because i didnt have a lot of time to spare i tried to reflash 2007 o/s , it came up with invalid vin\os pair , unable to licence vehicle , i thought this cant be right as i have ulimited holden licence , so i downloaded the file from the pcm only to find that it had change the o\s to a saturn aura v6 2008 with a diferant vin # HELP