Some keys, once used, should be melted down.
That said, always download the software directly from (not a torrent or crack site). Cracked versions often contain real malware.
PassFab Fixppo is a popular tool used to repair and fix issues with Windows operating systems. The ISO file provided by PassFab is used to create a bootable media that can be used to repair and fix Windows problems. This report provides an analysis of the PassFab Fixppo ISO file.