Just a FYI. It seems there is a bug with 50.00.07 which prevents you from installing map updates. I had to downgrade from 50.00.07 to 30.x.x for the map update to work successfully.
The error I would get is
"Map update was not installed successfully. Please retry update procedure or contact your dealer for assistance."
Additional details can be found in this thread.
430N RHB Updated with Garmin City Navigator 2014.10 NT - Jeep Wrangler Forum
Not only will this save you $150 but hopefully it should save you countless hours of trying to get the map update to install correctly. I expect to see another software update come out shortly as MANY people will be complaining after the new maps gets officially released later this month.
DO NOT ASK ME where to download the map files. You can find these on the internet. But I will say you need to use Jetmouse with FID:2920 to generate a code if you did not actually purchase the update.