It is already available on the manufacturer’s website
Nikon has released version 3.20 firmware update for Nikon Z 6 and Nikon Z 7 mirrorless cameras. One of the key innovations in this update is only of interest to those who have already completed the paid update to add RAW video support, or are about to do so. After installing firmware version 3.20, these cameras have the ability to output RAW video to external Blackmagic Design recorders (currently, Video Assist 5 ″ 12G HDR and Video Assist 7 ″ 12G HDR models are supported).
Update 3.20 for Nikon Z 6 and Z 7 mirrorless cameras will interest video enthusiasts, but not only them
The second innovation is from the same category. Users of Apple Final Cut Pro X 10.4.9 or newer can change ISO sensitivity and display and change color temperature when outputting ProRes RAW footage to external ATOMOS NINJA V recorders. Note that ProRes RAW support is also available. appears only when installing a paid update.
The update also adds support for the NIKKOR Z 50mm f / 1.2 S lens.
As usual, the new version fixes previously identified errors. In particular, an issue has been resolved where, in some cases, rotating the focus ring or control ring (if the focus function is assigned to it) did not switch to manual focus during continuous shooting.
Fixed display of the exposure indicator in M mode when a lens without a microprocessor is mounted on the camera through the FTZ adapter.
Fixed a situation where it was impossible to select certain aperture values by rotating the control rings of the lenses NIKKOR Z 24-50mm f / 4-6.3, NIKKOR Z 24-200mm f / 4-6.3 VR, NIKKOR Z DX 16-50mm f / 3.5-6.3 VR and NIKKOR Z DX 50-250mm f / 4.5-6.3 VR in movie mode.