Is it possible to upgrade or downgrade your head unit firmware? If so is this something I can do myself? Can an authorized Mazda dealer do it for me?

I suspect my Car2PC adapter is not working because I am on version 9.82 (they only list 9.81 and 10.01 as not compatible but I suspect otherwise)

 

www.mazdaparts.com used to offer it as a service. Check with them, they have a subforum here

 

Jedi: Thanks I will contact them.

Another option maybe to purchase an old unit? Anyone know where I might be able to option an entire head unit?

 

never fear, Jedi is here! (again)

check the vendor section on the home page and talk to Paul @ Mazmart. He specializes in finding new homes for mazda parts