Have you downloaded Antivirus software 2015 i.e. Avast 2015? Did you face any issues or errors with Avast free 2015 antivirus final version? If yes, you need to check out the newly released Avast 2015 SP1 with several updates for Avast 2015. Here, you will come to know about the improvements for Avast 2015 with the Service Pack 1 release as well as any Avast 2015 bug fixes. This will go a long way in making Avast 2015 one of the top 10 antivirus software for 2015.