Can I update avast! from local hard drive?

Hi.

Can I download antivirus base from Internet, save it to local hard drive, and update other computer from local or network folder ?

Are you talking about a network install (where you’d like the client machines to update from a central location on the LAN), or a standalone machine that is simply not connected to the Internet?

I say about standalone machine that is simply not connected to the Internet.

OK, for virus database updates, you download VpsUpd.exe from this page: http://www.avast.com/eng/update_avast_4_vps.html and and run it on the isolated machine.

For an update of the whole program, you download the regular setup package (http://www.avast.com/eng/down_home.html in the case of avast Home Edition) and run it on the isolated machine. It will detect that avast is already installed and offer you to update it.

Thanks
Vlk