Adobe AIR runtime silent install

Hi,

I know this question is asked often but I haven't found a solution for current release.

I've downloaded this version :

http://airdownload.adobe.com/air/win/download/3.5/AdobeAIRInstaller.exe

which is the lastest one.

I can run it and install it on a clean system.

But I can't find a switch to do it silently. I'm always having on the prompt the same result 'too many arguments'

Why can't we update like other programs ?

Thanks,

Vincent