Hi, a friend of mine has his own Independent VW specialist garage and he can also do some software updates and code keys.
He can access basic technical information and workshop manuals through their service info system I think he does it by buying diagnostic time via a dongle in his computer, don’t know how much he pays but it is an hourly rate and I doubt it’s cheap, he passes the cost on to the customer as part of the initial quote.
I think it has something to do with block exemption but no idea of any proper details.