If you are using AVG Antivirus on a computer, that’s not connected to the Internet, you have to update AVG to keep your system secure from viruses. For that, you have to download virus definitions and update the free antivirus.
There is a confusion which virus definitions file to download for AVG? FYI, these virus definitions file has an extension bin.
2. You can see Iavi and other files in that page.
3. Download Iavi file, copy that file to USB drive, connect it offline -PC and and double click on it to update AVG virus definitions.