What's the story with updating the MMI / NAV on the B8.5s? Searching on Ebay, there are all sorts of options, of which I have no idea what to select. Googling for it returns how-tos for DIYing (almost seems like "hacking" the system), but everything I've found is at least several years old. Same with searching Audizine. I assume I could go to the dealer, but I bet that's got a $300+ pricetag on it, which I won't spend just on principle.
Specifically, I'd like newer maps. Occasionally I do rely on the onboard nav. For example, a month ago, I forgot my cell phone and didn't realize it until I was a couple hours from home. My watch has cellular on it so I was still "in touch", but trying to do nav on it without it being driven by my phone was a no-go.
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