Nikon continues to support the Z5 mirrorless camera with important security updates in 2025. The latest firmware version 1.43, released in April 2024, focuses specifically on enhancing wireless connection security. While it may seem like a minor update, these changes address potential vulnerabilities in how your camera communicates with other devices wirelessly.
This security-focused update is essential for all Nikon Z5 owners who use wireless features like SnapBridge, WiFi transfer, or remote control. Even if you rarely use these features, keeping your firmware current ensures your camera remains secure and compatible with future updates.
After analyzing community feedback and technical documentation, I’ll walk you through everything you need to know about this update, including what changes, why they matter, and exactly how to install it safely.
What’s New in Version 1.43 In 2025?
Firmware version 1.43 is a targeted security update that makes specific changes to your Nikon Z5’s wireless communication settings. Released on April 17, 2024, this update follows the cumulative approach Nikon uses for firmware updates – meaning it includes all previous improvements and fixes.
The update focuses on two critical security aspects:
- Default encryption keys: Changed to improve wireless connection security
- Password settings: Updated default passwords displayed after factory reset
These changes might seem minor, but they address important security considerations for photographers who transfer images wirelessly or use remote control features. The update ensures that your camera’s wireless communications meet current security standards.
Like all Nikon firmware updates, version 1.43 is free to download and install. Nikon has been consistent in supporting the Z5 since its release, and this update demonstrates their commitment to maintaining camera security even years after the initial launch.
Understanding the Security Improvements
The security changes in firmware 1.43 focus specifically on wireless connection vulnerabilities. When your Z5 connects to other devices – whether it’s your smartphone via SnapBridge, a computer for image transfer, or a remote control device – it uses encrypted communication protocols.
Encryption keys are essentially digital passwords that secure these wireless connections. Over time, as security standards evolve and new threats emerge, manufacturers update these keys to stay ahead of potential vulnerabilities. This update ensures your Z5 uses the most current encryption standards.
The password setting changes affect what happens when you restore your camera to factory settings. Previously, the default passwords for wireless connections were predictable and potentially vulnerable. Now, when you reset your camera, it generates more secure default passwords for WiFi connections.
Do you need this update if you don’t use WiFi? While not strictly necessary for photographers who never use wireless features, I recommend installing it anyway. Firmware updates are cumulative, and skipping this one might prevent you from installing future updates that could include more significant features or fixes.
How to Install Firmware 1.43 Step-by-Step?
Installing firmware updates might seem intimidating, but the process is straightforward if you follow the steps carefully. I’ve updated multiple Nikon cameras over the years, and while the process requires attention to detail, it’s generally safe and reliable when done correctly.
Before you begin: Firmware updates require specific preparation to ensure everything goes smoothly. The entire process typically takes 15-20 minutes from download to completion.
Required Equipment:
- Fully charged battery (essential – never attempt with low battery)
- Formatted memory card (SD/SDHC/SDXC, 8GB or larger recommended)
- Card reader or USB cable
- Computer with internet access
Installation Steps:
- Download the firmware: Visit Nikon’s official Download Center and download the Z5 firmware version 1.43. The file will be compressed (.zip format).
- Extract the file: Unzip the downloaded file to reveal the firmware file (typically named something like FZ5-V143.bin). Do not rename this file.
- Prepare the memory card: Format your memory card in the camera first. This ensures clean installation. Note: Formatting will erase all data on the card, so back up any important photos first.
- Copy the firmware file: Place the .bin file in the root directory of your memory card (not in any folder). Ensure the file is exactly as downloaded – no modifications.
- Insert card and check battery: Insert the memory card into the camera. Verify your battery is fully charged – this is critical as interruption during update can damage the camera.
- Start the update: Turn on the camera and navigate to Menu > Setup Menu > Firmware Version. Select “Update” and confirm when prompted.
- Wait patiently: The update process takes 3-5 minutes. Do not turn off the camera, remove the battery, or open the card slot during this time. The camera will restart automatically when complete.
- Verify the update: After restart, check Menu > Setup Menu > Firmware Version to confirm it shows version 1.43.
Common Installation Issues and Solutions In 2025
While most firmware updates complete without issues, occasionally problems arise. Based on community experiences and my own troubleshooting, here are the most common issues and their solutions:
“No update file found” error:
This usually means the firmware file isn’t in the correct location or has been renamed. Ensure the .bin file is in the root directory of your memory card (not in any folders) and hasn’t been modified. Try reformatting the card and copying the file again.
Update stops or fails midway:
This is often a battery issue. Even if your battery shows as full, try with a different fully charged battery. If it still fails, try a different memory card – some cards have compatibility issues with firmware updates.
Camera won’t turn on after update:
Don’t panic. Remove the battery for 30 seconds, then reinsert it. If the camera still won’t turn on, try without the memory card first, then with the card. In rare cases, you may need to contact Nikon support.
WiFi settings changed after update:
This is normal with security-focused updates. You’ll need to reconnect your camera to your smartphone and other devices after updating, as the encryption keys have changed.
⏰ Time Saver: Before starting the update, write down your current WiFi settings and connection information. You’ll need to re-establish these connections after the update.
Frequently Asked Questions
Is the Nikon Z5 firmware update safe?
Yes, when installed correctly. The key is using a fully charged battery and not interrupting the process. Thousands of photographers have successfully updated their Z5 cameras without issues.
Do I need to install previous updates before 1.43?
No. Nikon firmware updates are cumulative, meaning version 1.43 includes all previous updates and improvements. You can update directly to 1.43 from any earlier version.
Can I update firmware via SnapBridge app?
No. Nikon firmware updates must be installed manually using a memory card. The SnapBridge app cannot perform firmware updates – you’ll need to follow the manual installation process.
Will this update affect my camera settings?
The firmware update itself won’t change your custom camera settings. However, since it changes encryption keys, you’ll need to re-establish WiFi connections and pair your devices again after updating.
Can I revert to a previous firmware version if needed?
While technically possible, Nikon doesn’t support downgrading firmware. It’s not recommended as it can cause instability. Always move forward with updates rather than trying to go back.
How long does the installation take?
The actual update process takes 3-5 minutes once started. Including preparation, downloading, and verification, budget 15-20 minutes total for the entire process.
Firmware: Firmware is the permanent software programmed into your camera’s memory that controls its hardware and features. Updates improve functionality, fix bugs, and enhance security.
Final Recommendations
Should you update your Nikon Z5 to firmware version 1.43? Absolutely. Even if you don’t frequently use wireless features, keeping your firmware current is good practice. The security improvements are important for protecting your camera and data, and the update process is safe when following the proper steps.
Remember that firmware updates are cumulative – by installing 1.43, you’re getting all previous improvements as well. Nikon’s continued support for the Z5 shows their commitment to maintaining the camera’s performance and security throughout its lifecycle.
Take 20 minutes to install this update. It’s a small investment of time for improved security and peace of mind knowing your camera is running the latest software.