Yes m8! took her in yesterday, 6 hrs later got a call from Vx job done £36 in all,that was delocking stereo and correct code for that unit,mine had locked out on 7 safe! there was a genuine problem with the unit which i really couldn't get to the bottom of at the dealership they seemed quite cagey as usual. If you cant find your security code give your local dealer a call, give them the stereo name ie vdo cdr 500 and the stamped product code on the side of the unit, usually starts with GM, they will then squeeze around £20 out of u, then maybe an hour later they will call u with the code for your unit. 😃