Thx for your answers but il doesn't help me Finding and downloading the patterns isn't a problem. I just want to add up-to-date patterns IN my unattended installation CD... I don't want to download these patterns after installation... I read a post about the "Updates" folder that permit to install up-to-date definitions automatically but there isn't enough details in this post. Here is what I did: I tried to uncompress the Kaspersky setup file, to create the "Updates" folder and to add the new patterns in it. But, when my unattended installation is finished, kaspersky uses "old" definitions. Can somebody give me some precisions about this method? Where do i create the "Updates" folder? Is it "Update", "update", Updates" or "updates"? Thx in advance.