How can I find out about Entune updates and how often can the dealer so these updates for free? I had a '14 4Runner with Entune. The dealer told me the '15 Prius Persona I just picked up had an older Entune version. I'm still sort of shocked my 4Runner has a newer head unit vs the '15 Prius. '15 Prius Persona-Blizzard Pearl
