Wow~ Thanks for the great info

After doing some more reading I now know that I should get a Visteon module. I found the following info:

Visteon Bluetooth Module (Bluetooth only, requires removal of the BMW Assist module):
84 21 6 934 552 end of life 06/03 1st generation
84 21 6 938 610 end of life 10/03 2nd generation
84 21 6 934 961 end of life 03/04 3rd generation
84 21 6 950 089 end of life 06/04 4th generation
84 21 6 945 387 end of life 11/04 5th generation
84 21 6 955 522 end of life 04/05 6th generation (do not confuse with the 552 1st generation)
84 21 6 969 268 7th generation

I was wondering if the life span between generations was universal? Like, if I saw a module on Ebay Spain for a Spanish module with the date August 2003, would it for sure be part of the 2nd generation