You can see it in the Go4 app when powered up and connected (make sure you remove the props when you power up your bird in the house/garage, you don't want it spooling up unexpectedly), and when connected to pc with assistant.
Looks like they "updated" you (if it's the same serial number), or just swapped out the bird with another "updated" unit.
I don't get bothered by the NFZ bits, and other hobbling "features", reason: I have never updated anything in almost 3 years, and my bird flies perfectly fine thank you. It will never see the web to "phone home".