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Awesome thread! I read it, but I'm a little confused for the coding part.
My car is E92 325i 09/2006 without iDrive. It has a Professional unit but no USB or Bluetooth, just AUX. The speakers setup is the base one, so no tweeters, no Amp (Crappy sound, I know).
I decided to swap the HU with one that has USB and Bluetooth integrated in it. It's from a much newer car I guess. Part number is 64129243919-01. I also got the mic with the cable and the USB socket. The seller asked me for my VIN so he can code the HU specifically for my car before sending it. It will arrive in a few days.
The question is do I need additional coding for the car itself or (if done correctly), the HU coding will be enough and I just have to swap the HU and attach the cables?
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