If you have the premium version and you own a bingmap API key, you can use it here.
This will unblock some map feature in the GTN750:
    - In the Utilities pages, you'll have access to the map page.
    - In the airport info page, the preview will show a satellite view.
This is an experimental feature and we do not provide any support for it.
There is a known issue that may produce some black tiles when you are resizing
the GTN750 toolbar panel.

You can get a free bingmap API key for development purpose at https://www.bingmapsportal.com/

When generating your key, choose an application name (whatever you want), let URL empty, choose Yype Basic and Application Type Website.

Please replace the string YOUR_KEY in the last line below with your own key if you
want to use this feature.

bingmapkey=YOUR_KEY