Couple of things.
First When I first got my MP, I contacted their Safe Skies or
whatever they called it. Then an odd thing happend, I got a pm from one of their guys which just said,
do not update beyond .400 .... I didn't need all them fancy flight options, so stayed where I was, and was able to simply turn off NFZ using the DJI Assistant Application. (See WiKi)
Now of course we have
NLD (NoLimitDronez), who developed a seperate application that will allow you to change all elements of your MP, including rooting, remove height restrictions, and completly remove the NFZ.
The guys who developed the application, are all part of the "original gangsters" who bust wide open the Mavic, in response to DJI playing dirty and not obeying the rules of GPL
Now we can more or less do whatever we want with the Mavic, within reason.
But just because NFZ was removed, was not a licence to go causing havoc, there was cases of a genuine reason why not to have NFZ, apart from the fact the DJI database was totally screwed up.
Loads of information on our
WiKi