To manually update virus definitions first download the BIN file from the site and save it on your computer (or USB flash drive), then access the Options menu in your AVG product and use the ‘Update from folder’ option to select the folder where you have saved the BIN file you have just downloaded.
AVG apps update automatically. If your update has failed, please try again from within your app. If you need to update manually, use the following file aviupd.exe.
Also Available: Download AVG AntiVirus Free