Fitting A2Dp/bt Audio/usb - Mk7 With Bt Vc Only - Pointers Appreciated

I've got a 2009 Fiesta Titanium, which was factory fitted with BT voice control -- but it was the older bluetooth module (8M5T-19G488-AM), that doesn't support A2DP (bluetooth audio). After some reading I've found any module 8M5T-19C112-AM or later (e.g. AM,AN,<etc>) should support this -- and as an added bonus, USB support too.

I've got ahold of a 8M5T-19C112-AN and fitted it. It's working fine for all the old functions, but new ones -- not so much:

• Voice control lists USB,iPod, Bluetooth audio as an option in "External device", but says "Not possible" when selected
• AUX menu doesn't show USB/iPod/Bluetooth Device

I've read around that I need the dealer to update the below params with the IDS. Question for anyone who's done this before --- is this right, and am I missing anything else they'll need to do? Pointers would be much appreciated -- the dealer isn't very happy to play with parameters without having a reasonable idea that it'll work.

IDS Params:

• Voice Control: Select Basic Voice Recognition
• Accessory USB Unit: Select With USB and iPod Function
• Bluetooth handsfree: Select BT/VC Phone Interface + USB Connection

Possibly required:

• Update stereo, "audio module","speech recognition module", and "display module" if necessary