Hi Fido, recently had my IS250 MM Sport 2007 serviced a Cardiff at 20000 ( advised it was a major service ) and this cost me £320.00. Service was very good as I live 100 miles from dealership and they met me halfway and we swopped cars, ( they provided Toyota Yaris courtesy car).
What was extremely strange, whilst driving to meet the driver, to swap cars back after the service, I received a call from giggly (probably good eye candy) receptionist at the Dealership informing me that the car was due a service, CONFUSED or what !!!
However, not sure on the download / upgrade issue as I raised this earlier as I have never been given a Sat Nav up=grade etc, not sure if this is what you mean.