John, definitely wait for KH to look at your car. I do find it odd that the factory are the only ones with access. Dealers and authorised garages should be able to even through a link to a central computer. I think that is the case for BMW dealers/ authorised independants. Correct me if I am wrong.
Also, are recovery/ breakdown services like AA or RAC able to access the ecu for fault diagnosis and, reset ability. A reflash is the next stage up so that might be blocked for them as a step too far! Maybe even dealers don't have this flash/remap access?
