I used the second link to reinstall the stereo back to OEM. The radio works all music comes out the correct speakers but car sounds like door open and key in ignition do not work.
I know my car came with Hifi stereo because of the Vin, it also did not come with BMW assist or SOS.
I know what system I have, or at least what system was there when the car came out of the factory, I am trying to get it back to where it was out of the factory.
The above links I have read 10 times over. However the bottom link is new and may have some very helpful information.
I seem to have everything hooked up correctly, but am missing the car sounds. I do not have a speaker under the driver side dash, buy my understanding is 09 all sounds come through the speakers running through the Hifi amp.