How to switch between Google Maps and HERE maps upon restarting NLD GO 4.1.22:
Here is what you need to do on your device: Go to internal storage and look for the /DJI/og_settings folder. Unzip useGoogleMap.zip and copy the useGoogleMap file into /DJI/og_settings folder, or you can make your own file named useGoogleMap and place it there. DO NOT make useGoogleMap.txt file and use that. It will not work. You need to remove the .txt and save it only as useGoogleMap. Run GO. You should have Google Maps working. If you want to switch back to HERE maps, just rename that file.
SO JUST ON YOUR COMPUTER OR PHONE MAKE a file called useGoogleMap and put that file into the folder. You may need to restart.phone. it worked for me
DOESN'T work with DJI spark.