make sure your mk4 red led light is not flashing it may takes upto 5 or more mins to go off make sure do not open any doors or press any bottens on the key just with boot opened mk4 dvd drive is located in your boot on driver side when the red led light stop flashing then disconnect the bettery, (how i know i had to reflash $$$ my mk4, just trying to give you some good tips thats all.

Special Thanks to ( ccfj1 ) he made me a OS for my mk4.
you are the best John aka ccfj1

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2011 X5 M-sport