Joshua was referring to a guy who couldn't even download the full version.
Transferring serial keys doesn't work. As Joshua pointed out correctly, you have to register at Aerosoft with the serial provided by your download shop.
It's true, though, currently only the full version is available from the Aerosoft Updates database.
It was not clear, Some of us assuemed he was talking how to get the update installer only. Anyway, I know of course that at the moment only the full version installer is available. I'd like to know when approx the update version installer will be available.