Update Avast Through CMD (Without User Interface)

Avast Free Antivirus / Premium Security
1

Hey,
How can i update Avast with vpsupd.exe file(the manually update file) without the User-Interface?

In other Anti Viruses there is an option to update through the CMD with update file, how can i do it in AVAST?

I want to write a script.

Thank You.

2

Somebody have any idea?
If not how can i contact support via email ?

3

Maybe /silent switch?

4

/silent ? what we this achieve ? i want to update my product. how can i do it ? what is the command ?