2017 Focus RS Nitrous Blue
I can confirm if you switch the "nav in motion" bit in Forscan to true, you can still search USB media while driving, even after the upgrade, but not sure about older versions not requiring that.So...if I upgrade, will I lose the ability to browse usb media while driving? I can't tell if this is still an issue.
I can also confirm you're stuck on a non-US country when you flip nav in motion. If you try to go back to US you'll get nav in motion disabled. They are mutually exclusive, as was stated in here earlier but of course I had to do it myself anyway.