To view the camera firmware version or update the camera firmware, select [Firmware version] in the setup menu.
Updates can be performed using a computer or smart device.
Computer: Check the Nikon Download Center for new versions of the camera firmware. Information on performing updates is available via the firmware download page. https://downloadcenter.nikonimglib.com/
Smart device: If the smart device has been paired with the camera using the SnapBridge app, the app will automatically notify you when updates become available, and you can then download the update to the camera memory card via the smart device. For information on performing updates, see SnapBridge online help. Note that automatic notifications may not be displayed at exactly the same time as the updates are made available on the Nikon Download Center.