Kaspersky™ AntiVirus (KAV): Antivirus-signatur Update

Normal your Kaspersky Antivirus product does the update of the antivirus-signatures automatically.

But if you require to download the antivirus-databases manually by yourself, you can do from here:

via FTP-Server:

ftp://ftp.kasperskylab.ru/updates/
ftp://ftp.avp.ru/updates/
http://www.avp.ru/updates/
http://www.kasperskylab.ru/updates/

via Kaspersky Website:

http://www.kaspersky.com/de/downloads