Nikon WR-1 Wireless Remote Firmware 1.04 Nov 10, 2021
... 5 cameras - D6, D5, D4S, D4, Df, D850, D810A, D810, D800, D800E, D780, and D750 cameras ... upgrades can be performed for you by a Nikon-authorized service representative. Viewing the WR-1 Firmware VersionOn the Camera - Attach the WR-1 to the camera and slide the Tx/Rx/OFF switch to Rx. ...