The navigation can be frustrating. You have to turn off the extra nannies like "auto reroute" or the thing will send you all around hell to bypass traffic that you know is NOT THERE. I use the nav more as a MAP and pick my own route many times. There is a tread here were someone walked you through using jailbroken phone to display pretty much any IOS app on the display.
Mike
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2018 M5 and 2019 Porsche Boxster GTS
Prior. '94 325is, '97 M3 Lux, '16 M2
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