I was reticent to put the link here, I have no idea what's official or not regarding the vcds... Is there any official version cheap?
Maybe find a
garage for them to do it for you. As long as you tell them what you want to do, and they have the right tool, wich they should have it will be no
problem.
PS: The cause the pump has the incorrect code is because apparently at some poing someone replaced it by a pump beloging to a car without ESP and didn't change the
coding to the correct one. Very common among pumps fitted outside the
dealer, almost no one knows they require
coding.