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What do you mean by "cheat sheet"?
Coding an e89 is not a case of just putting a code into a laptop and thinking that's it, you need to tell the car that the new module is there and then code it in, for example there are some 60 steps to coding Cruise Control after you've done the physical installation.
Basically unless someone has gone to the trouble of writing down the whole sequence for you then it's a lot of research to be done before you even set foot into the car!
There are the likes of "Carly for BMW" that can perform "short-cut" programming of various items, but this is limited to certain features that already have their modules installed from the factory and even then it won't do everything.
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