Firmware and Updating

On 26 August 2025, a Z6III owner who opened the subject-detection options found no entry for birds. On 27 August, Nikon published a file named Z6_3_0200.bin, about 112 MB. An owner who copied it to a memory card and ran one menu item found Birds in the same list, along with dozens of smaller changes. The sensor, shutter, buttons and lens were the same parts as the day before. What changed was the program the camera runs, and that program is called firmware.

How that program is numbered, read and replaced decides which features your camera has, which known faults it still carries, and whether a menu code in a tutorial matches the one on your screen.

01.What Firmware Is

Start by pressing the shutter-release button halfway. Nothing mechanical connects that button to the glass that focuses the picture. The button closes a switch. A program in the camera notices, reads focus information from the sensor, works out which way and how far focus must move, and sends an instruction through the contacts on the lens mount. A second program, inside the lens, receives it and moves the focusing glass. Both programs are firmware: software stored inside a device that controls that device's hardware.

Firmware is not something you add to the camera the way you add an app to a phone. It is already there, it is what makes the camera work at all, and updating it means replacing the old version with the new one in a single deliberate operation. Nikon's 2.00 file installs over any camera version from 1.00 to 1.11 and carries every earlier change with it, so you never install the versions in between.

Nikon's update instructions open with one warning: the camera may be damaged if its power is cut or its controls are used while the update runs, so leave it switched on, keep the battery in and touch nothing until the update finishes.

The Parts the Camera Reports

The Z6III reports one version for each programmable part attached to it at that moment, each labelled with a short code (Reference Guide p. 866). A part that is not connected is not listed.

Two lens updates show why a lens needs its own program. Version 1.01 for the NIKKOR Z 180-600mm f/5.6-6.3 VR, released on 29 May 2024, fixed focus that could be inaccurate at infinity when the lens was zoomed to around 400 to 600 mm in low temperatures. The fix went into the lens, not the camera, because the lens runs its own program for positioning its focusing glass.

The second shows the two programs depending on each other. Version 1.10 for the NIKKOR Z 85mm f/1.8 S, released on 20 December 2022, added linear manual focus through the lens's control ring. Linear means a fixed turn of the ring always takes focus from the closest distance to infinity, however fast you turn it. The lens update made it possible, but the camera has to offer the switch: on the Z6III that is Custom Setting f10, Focus ring rotation range, which defaults to Non-linear and offers fixed turns from 90 to 720 degrees or Max., the longest turn the lens allows (Reference Guide pp. 627 and 737). Neither program delivers the feature alone.

File sizes show the division of labour. The camera's 2.00 file is approximately 112.19 MB and the 180-600mm's 1.01 file approximately 2.18 MB, and $112.19 \div 2.18 \approx 51$, so the body's program is about fifty times the size of the lens's.

02.Reading the Installed Versions

Press MENU, open the setup menu and select Firmware version. The camera shows a line labelled C for itself and a line for each attached part that carries firmware, such as LF for the lens. An update from a memory card starts from this same item.

Do this once with each Nikon lens you own, noting its LF number, because the camera shows only the lens on the mount. A fully current Z6III reads C 2.00.

If the camera is linked to Nikon Imaging Cloud, Nikon's online service for the camera, a notification mark appears on the setup menu tab and on Firmware version when a new version is available, and again after the camera has updated itself (Reference Guide pp. 866 and 876).

03.Three Ways an Update Reaches the Camera

Nikon describes three routes for camera firmware (Reference Guide p. 866).

From a Computer, by Memory Card

You download the file on a computer, copy it to a card and run the update from the camera menu. Start at the Z6III page in Nikon's Download Center, which links to the 2.00 download page. Nikon documents this route step by step.

Through SnapBridge

If the camera is paired with a phone in the SnapBridge app, the app tells you when an update exists and can download it to the camera's memory card through the phone. Nikon warns that SnapBridge may announce an update later than the Download Center publishes it.

Through Nikon Imaging Cloud

When the cloud reports a new version, Update now (Nikon Imaging Cloud) appears inside Firmware version. Setting it to On and pressing right on the multi selector downloads the file over the Internet, and the update starts by itself.

Auto Update goes further (p. 867): set it to On, choose a time, and the camera connects every day at that time and installs any update it finds. It works only when camera sign-in is turned on in Nikon Imaging Cloud, the power switch is at OFF, and the camera runs from outside power: an EH-8P AC adapter on the supplied USB Type-C cable, an EH-5b, EH-5c or EH-5d AC adapter plugged into an EP-5B power connector, or a third-party portable charger. Nikon's press release for 2.00 adds that updates are now installed automatically by default once the camera connects to the cloud.

My recommendation is to update by the computer route and treat the other two as notices, because only the computer route takes you past Nikon's change notes and cautions, such as the instruction to remove third-party lenses. If you use Nikon Imaging Cloud, check Auto Update, so a menu change never arrives unannounced on the morning of a shoot.

04.Updating the Camera

What You Need

Nikon's 2.00 page and its general update guide for Z cameras together call for:

• a card reader that takes your card type (the Z6III takes CFexpress Type B and XQD cards in one slot and UHS-II compliant SD, SDHC and SDXC cards in the other, Reference Guide p. 999)
• a memory card formatted in this camera
• a fully charged battery or a supported AC adapter
• nothing on the mount but a NIKKOR Z lens or an FTZ or FTZ II adapter

The last item comes from a caution on Nikon's 2.00 page: updating with any other lens or adapter attached could make the camera malfunction. A Tamron, Sigma or Viltrox lens comes off first.

Nikon's Procedure

Nikon gives the steps in this order:

• Download Z6_3_0200.bin, approximately 112.19 MB, to the computer. Windows and Mac get the same file.
• Format the card in the camera, then copy the file with the card reader to the root of the card, meaning the top level, outside every folder. Nikon's general guide adds that it must be the only firmware file on the card.
• Put the card in the slot currently selected as the primary slot and turn the camera on.
• Select Firmware version in the setup menu and follow the instructions on screen. In Nikon's general guide that means highlighting Update, pressing OK and choosing Yes.
• When the camera reports the update complete, turn it off and remove the card.
• Turn it on again and confirm that Firmware version shows the new number.

The primary slot is the slot you have set under Primary slot selection, the one that counts as primary when two cards are inserted (Reference Guide p. 456). Its default is the CFexpress/XQD card slot (p. 446). If you made SD the primary slot, the card goes in the SD slot. Formatting deletes every picture on the card permanently (p. 808), so copy your pictures off first.

Afterwards, format the card in the camera again before you shoot on it, as Nikon's general guide directs. A Nikon-authorised service centre can also do the update for you.

05.Updating a Lens

A NIKKOR Z lens is updated through the camera with the lens mounted, by the same procedure: copy the lens file to the root of a card, insert it, open Firmware version, follow the instructions, then turn off, remove the card, turn on and check the LF line.

Three details differ. Mount the lens directly, since the 180-600mm page says not to attach a teleconverter. File names differ by lens: the 180-600mm's is MLZ180_600F56_63VR0101.bin. And some downloads are packages: the 85mm f/1.8 S version 1.10 comes as a Windows .exe or Mac .dmg that unpacks into a folder named Z85F18SUpdate holding MLZ85F18S0110.bin. Only that .bin goes on the card.

To check for a lens update, mount the lens, read its LF number and compare it with the newest version on the lens's page at the Nikon Download Center.

Update the camera first and the lenses after, one file per card, formatting between them. That order is my recommendation, not Nikon's rule, and the 85mm is the reason: its new behaviour needed a camera setting.

06.What Firmware 2.00 Changed

Nikon's press release calls 2.00 the first major update since the Z6III launched, bringing several features equivalent to those of the Z9 and Z8. The change list runs to dozens of items and notes that some Custom Settings were renumbered to make room. The changes that alter how you shoot get a subsection each, and the rest are in a table.

Birds in Subject Detection

Subject detection means the camera recognising a kind of subject and steering focus to it. Version 2.00 added in Firmware 2.00 puts Birds among the choices for AF/MF subject detection options, in both the photo and the video menu. The full set becomes Auto, People, Animal, Birds, Vehicle and Airplanes, plus Subject detection off. With Birds, the focus point goes to a detected bird's face, to an eye when the camera finds one, and to the whole bird when it finds neither (Reference Guide p. 127). Nikon's press release says it holds birds in flight against forests and rocky mountains. That is Nikon's claim, not a measurement this guide has checked. Covered in Subject Detection and Birds in Flight.

Auto Capture

Auto capture added in Firmware 2.00 lets the camera shoot with nobody pressing the button, once a subject meets conditions you set (Reference Guide pp. 559-560): Motion (the direction it moves), Distance (how far away it is) and Subject detection (what kind of subject it is). Picture a camera on a tripod by a feeder, set to fire only when a bird is between 3 and 6 m away. Nikon's press release adds that the distance condition needs a NIKKOR Z lens and that a start day and time can be scheduled to save battery. It works for video too. Covered in Auto Capture.

A Slower High-Speed Mode and Better JPEGs for It

High-speed frame capture + is a burst mode that records JPEGs at a fixed high rate. It pairs with Pre-Release Capture, in which the camera buffers frames while you half-press and keeps the last of them when you press fully, so the burst starts slightly before your reaction (Reference Guide p. 156). Version 2.00 adds a 15 frames-per-second rate, C15 added in Firmware 2.00, beside C30, C60 and C120, and sets image quality for these modes separately, under Image quality settings > Image quality (HSFC) (p. 156). Nikon's press release says JPEG fine is now available with Pre-Release Capture at 60 fps in full frame, saving up to one second from before the full press. Covered in Release Modes, Frame Rates and the Buffer and in Pre-Release Capture.

Focus Limiter, Maximum-Aperture View and Half-Press Zoom Cancel

A focus limiter tells autofocus to ignore anything nearer or farther than a range you set. Picture a bird 8 m away seen through twigs 2 m from you: with limits at 5 m and 15 m, autofocus has no reason to jump to the twigs. Custom Setting a15, Focus limiter setting added in Firmware 2.00, does this with a Z-mount lens attached: Focus limiter turns it on (default off, p. 623), and Limit range sets Nearest and Farthest anywhere from 0.1 to 999 m (pp. 648 to 649). Nikon lists eight NIKKOR Z lenses that cannot use it, as of November 2025, among them the 24-70mm f/4 S. The press release adds that it can be assigned to a custom control.

Custom Setting a13, Maximum aperture Lv added in Firmware 2.00, defaults to Off (p. 623). At On, the view stays at the lens's widest aperture until the full press, when the lens closes to your aperture for the shot (p. 646). The view stays bright, at two costs Nikon names: the release may come slightly later, and with the lens wide open you must not point the camera at the sun.

Custom Setting d19, Half-press to cancel zoom (MF) added in Firmware 2.00, with its video twin g18, lets a half-press end the magnified view used for focusing by hand (p. 685). All three are covered in The Focus Custom Settings and in Focus Limiter, Saved Positions and Manual Focus.

A Webcam Mode

USB streaming (UVC/UAC) added in Firmware 2.00, under USB in the network menu, makes the camera a webcam over its supplied USB cable (Reference Guide pp. 219-220). UVC and UAC are the USB Video Class and USB Audio Class, the standards webcams and USB microphones use. The camera sends 1080/60p, 1080/30p, 720/60p or 720/30p video as MJPEG with 16-bit stereo PCM sound, and Nikon warns that some computers need an extra program. Covered in the video part.

The Authenticity Service

The Nikon Authenticity Service added in Firmware 2.00 records where a picture came from, following C2PA, an industry standard for attaching that provenance record to an image. Per Nikon's press release, you apply through Nikon Imaging Cloud for a digital certificate, which is loaded into the camera. Pictures then carry details of the equipment and a digital signature: a block of data computed from the file with a secret key tied to that certificate, so an altered picture no longer matches it and nobody without the key can make one that does. Some shooting functions are restricted while it is on, and it may not be offered in every country. Covered in SnapBridge, Nikon Imaging Cloud and the Authenticity Service.

Everything Else

07.Which Changes Matter for Your Kind of Shooting

This is my reading of what to learn first after updating, by kind of work.

08.Earlier Versions

Nikon's 2.00 page also lists earlier versions. Version 1.01 opened Nikon Imaging Cloud in the Chinese Mainland. Version 1.02 fixed video recording on some CFexpress cards and failed Ethernet uploads. Version 1.10 added Hi-Res Zoom in the DX image area, power-zoom controls for the NIKKOR Z 28-135mm f/4 PZ and less noise in dark areas of N-Log, fixed a list of faults, and renumbered some Custom Settings. Version 1.11 changed only guidance text shown while connecting to Nikon Imaging Cloud. Covered in full in Firmware History.

09.Do Your Settings Survive?

Nikon's download page and manuals do not say whether an update keeps your menu settings, so protect them yourself.

Save menu settings writes to the card in the primary slot. It saves every Custom Setting, most shooting, playback and setup items, My Menu, and the U1, U2 and U3 user settings (Reference Guide pp. 860 to 864). The file is named NCSET plus an identifier. The camera cannot load it if you rename it, and it works only between cameras of the same model.

Save your settings, copy the NCSET file to your computer, and only then format the card for the firmware. After the update, look through your Custom Settings, and if anything has changed, put the file back on a card and use Load menu settings. Nikon does not say whether a file saved under one firmware version loads under another, so keep a written note of the settings you would hate to rebuild. Covered in User Settings and Settings Files.

10.When to Update and When to Wait

On 1 October 2026, the Z6III page on the Nikon Download Center lists one camera firmware, version 2.00 of 27 August 2025, and Nikon's 2026 What's New index has no Z6III entry. Version 2.00 is still the latest.

Update when the notes name a fix or feature you want, at home, with your settings saved and time for test frames. Wait if a shoot you cannot repeat is only days away: the camera you know is worth more than a feature you have not tried. Nikon offers only the current version for this body and describes no way back, so treat an update as one-way.

11.Mistakes Beginners Make

Leaving the file in a folder. Dragging a whole download folder, or a lens package's Z85F18SUpdate folder, puts the .bin one level down, where the camera cannot see it. A lens download that arrives as .exe or .dmg must be opened on the computer first.

Using the wrong slot. Nikon's instructions for the 2.00 update say to put the card in the slot currently selected as the primary slot. If you changed Primary slot selection to SD, that is the SD slot.

Starting on a tired battery. A battery that dies mid-update is one of the interruptions that can stop the camera working.

Putting several firmware files on one card. Update, format, copy the next file, update again.

Trusting old menu codes. Nikon renumbered Custom Settings in 1.10 and again in 2.00. Even Nikon's 85mm note calls the focus-ring setting f9, its number on the cameras of the time, but on the Z6III it is f10. Find a setting by its name.

12.Related Chapters

• What the Z6III Is explains the camera this firmware runs.
• A Tour of the Body shows where the card slots, multi selector and power switch are.
• First-Day Setup is where you choose the primary slot and the settings worth saving.
• How the Menus and Controls Work explains the setup menu, the Custom Settings codes and finding an item by name.