@ JuninhoSlo
Read the topic, if you can't figure out how to get it, perhaps you shouldn't be beta testing security software.
Beta software, especially beta security software isn't something to take lightly, there are risks involved in beta software. Whilst avast beta builds are generally stable, this one hasn't even been notified officially in the forums where it would normally be.
So for me this isn't officially sanctioned and you should at least wait until it is if you feel you are comfortable with the risk involved in beta testing security software.