Yeah I'm a bit anxious about that too, the tech at BMW seemed to know what I was talking about and he told me that he'll need to get a code from HQ that's custom to my VIN number and then reprogram the car....which is the right procedure.

I'm not starting the conversion for another week but will keep you guys updated with more pics and hopefully valuable info.

Cheers

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BMW X5 E53, 4.8iS - 2005
Professional Stereo/Nav with DSP (modified BM54 module) - Converted to Eonon GA5166X with Reverse cam
4-Corner Air Suspension - Converted to BC Coilovers