I have tried over 24 hours but avast “vpsupd.exe” file server not updated definitions 111109-0. I have downloaded “vpsupd.exe” file in morning but it has definitions 111108-0. The time and bandwidth wasted. Few minutes ago again I have downloaded “vpsupd.exe” file it has definitions 111109-0 and update successfully works.
You must try this method. Otherwise Update failed, terminated,retrying.

Note:- Download “vpsupd.exe” at a time. Don’t Resume. It Updates several times with one permanent download link.