For the first installation on an machine without Aiolos you will need the AiolosSetupX.Y.Z.exe. X,Y and Z are revision numbers of the installation package.
The installation program contains all you need for different kinds of installations. The different types of installations are;
1) First installation at a new site
2) Installation on a machine without a previous Aiolos installation
3) Update the central directory (Autopatch) at a site. All other clients can update themselves from this directory.
4) Update one client (from the autopatch directory)
This installer will ask you for a password and depending on your license the correct files will be installed. It is not possible to install without any password.