OS:: Windows 7/8/8.1/10 - 32/64-bit.
NLD DJI Go 4.1.3: Android (Flight Controller)
Note: iOS can use the NLD MOD Client if your DJI Go App is 4.1.3 or below.
The activation key is bound to the bird's Board Serial Number.
You don't need a key to run and test the app, but to apply the mods.