For those interested in the ULF part number and corresponding generation check out the following
Available part numbers of the Bluetooth ULF from BMW
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 01/05 5th generation
84 10 6 955 522 end of life 10/05 6th generation
84 10 6 969 268 end of life 04/06 7th generation
84 21 6 958 358 end of life 05/06 8th generation
84 10 6 987 546 end of life 9/06 9th generation
For more info check out
http://www.bimmernav.com