I use an ASG v7.505 at home and I want try v8 beta if possible. I have no screen and no keyboard connect to my Astaro.
Is there a solution to install ASG v8 (7.950, ...) using up2date or command line ?
Sorry, currently the only official way to install without screen/monitor is by using a special USB stick with a special flavor of the installation ISO. This thing is called "ASI" (Astaro Smart Installer USB stick) and is, as far as i know, only available to our partners. The special feature of these USB sticks is that they can emulate a bootable CD-ROM, and this makes them kinda expensive.
We will start working on upgrade procedures for existing installations after the GA release of version 8, so if you can't get your hands on an USB CD-Rom, a keyboard and a screen, you'll have to wait.