I've looked through the site for series 60 SDK for VC6 and I can't find it.
In the series 60 main page it says that version 2.1 of the SDK supports VC .NET, VC6, Borland etc... It then let's me select a specific product. The top of the list is Chinese Microsoft version, and the second one is Borland&Microsoft version. All the rest are not relevant as far as I understand.
I tried downloading the second one (as it's the only one that makes sense for me to download) but it's only the .NET version.