Nikon today updated firmware for two older DX cameras, both for bug fixing. The Z50 firmware is now 2.60, and the Zfc is 1.80.
Along with the camera updates, Nikon also updated NX Studio to version 1.9.0 and Wireless Transmitter Utility to version 1.14.0. These updates were mostly to provide support for the Z5II, which is about to ship.