NFZ mod board allows you to fly using GPS positioning inside NFZ zones. By default NFZ mod is not activated therefore you can use your Phantom 4 as usual. No NFZ correction will be applied.
There are two ways to activate NFZ mod:
Be very careful with NFZ mod activated. Avoid mixing false and real coordinates.
USB port on NFZ board is for NFZ board firmware updates. We’ll keep testing NFZ board with new Phantom 4 firmware releases, but it is better to avoid updating Phantom without any need.