the BT retrofit requires the radio to be coded and it doesn't matter if the hardware (bt antenna & mic) is there or not as long as the mulf2 is there.
see if you can read the 2URAD using tool32. if you can, try to reset the module via tool32 and see if it works.
another alternative to buying the much more expensive icom OPS head is to search hard for the icom emulator. up till about 1 month ago, this icom emulator is only available if you bought it from the developet/programmer/hacker. however it has since been shared on other forums. search for ista-d 2.30 on google and you should be able to find the forum for you to download it. this should allow you to use the newer software (different from NCS) to code the car properly via the OBD cable.