Rand McNally device is getting unresponsive then the primary solution should be to turn it on and off repeatedly or you can follow these steps. The Garmin experts are consistently providing assistance to their users. You can use Garmin Map to get Garmin life time maps update or call +1-888-309-0939 for instant help from Garmin GPS experts.
https://garminnuvimapupdate.com/blogs/h...
https://garminnuvimapupdate.com/blogs/h...