How to find factory option list for my S8

[Condor]

Have just spent a frustrating time searching for VIN decoders which will give me a list of the factory options and spec of my S8 - plugging the VIN into the Audi decoder shows when and where it was built but no list of options, there are links to what seem to be US sites but they don't find the VIN to be valid. I want to prepare it for sale after 14 years of ownership

It was really easy to do it for my BMW, but have had no luck with the S8 - help appreciated.