Nikon D6 Reference Manual page 131

D
The Wireless Transmitter Utility
You will need Wireless Transmitter Utility computer software when
uploading pictures to a computer via the camera's built-in Wi-Fi, the
WT-6, or an Ethernet connection.
D
The SnapBridge App and Computer Applications
•
The SnapBridge app is available from the Apple App Store® and on
Google Play™.
•
Nikon computer software is available from the Nikon Download Center.
Check the version and system requirements and be sure to download
the latest version.
https://downloadcenter.nikonimglib.com/
Uploading Pictures
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