For consumer hardware like Pioneer or TiVo, "software" refers to firmware updates for features like Apple CarPlay or system stability. : Can be found on official support pages like Pioneer Electronics TiVo Support Are you looking to update a satellite receiver via RS232, or are you setting up a professional networked audio
If you are looking for software to manage or update an AV receiver card, these are the industry standards: AJA Desktop Software : Bundles tools like AJA Control Room for professional I/O cards. Gefen Syner-G : Used for managing AV-over-IP signal distribution and discovery. av card receiver software