The only official source for a is through Honda’s authorized provider. For many years, this was Honda Navi (operated by HERE Technologies, formerly Navteq). As of recent years, Honda has transitioned to Garmin for newer models, but legacy updates for the 2012 Pilot are still handled by legacy providers.
For the cost of two official GPS updates, you can buy a brand-new touchscreen stereo.
A: Most vendors ship within 5-10 business days via USPS or FedEx. Digital downloads are rarely offered for the 2012 HDD system due to file size (approx. 8-12 GB).