I did not extract it. I took the car to Hartge dealer here in Greece. He just put the car into sleep mode, and he hooked up the ecu to a laptop with another device next to it. It took a couple of hours although I wasn't the hall time there to observe. So basically its something like a firmware upgrade. Also be aware that with this method if the cars firmware is reset you loose all the remapping data:( so you must not let bmw upgrade it if there is no real need. I think that Hartge will upgrade it back for you with no extra cost if you take the car back in a close period of time:thumbup:.