WF4KN Wireless NVR Firmware Upgrade Guide

This guide applies to WF4KN Wireless NVR and WF4KC2 wireless cameras

Latest firmware versions:

• WF4KN (wireless NVR): V8.2.4-20251120
• WF4KC2 (4K wireless camera): V34.21.5.2_251011

Important: The wireless camera version can only be upgraded through the NVR's HDMI user interface. Wireless cameras cannot be upgraded using the NVR's web browser user interface.

Preparation Before Upgrade

• Download the correct firmware files for WF4KN and WF4KC2.
• Use a USB flash drive formatted to FAT32.
• Copy the .sw firmware file to the root directory of the USB drive.
• Safely eject the USB drive from your computer.

Make sure:

• The NVR is powered on and stable.
• Insert the USB flash drive into the front USB port.
• Cameras are paired and have a fully charged battery.
• Do not power off during upgrade.

System Upgrade: WF4KN Wireless NVR Firmware Upgrade

1. Insert the USB flash drive into the NVR USB port.
2. Using a mouse connected to the NVR to access the HDMI TV user interface, right click and go to: Menu Setup >> System >> System Maintenance >> Upgrade
3. Click Select File, click  OK tab to proceed with the update
4. Choose the WF4KN firmware file from the USB drive. Click OK.
5. Click Upgrade. Authenticate with the admin NVR's password when prompted. The upgrade takes approximately 3 to 10 minutes.

DO NOT:

• Turn off the NVR
• Remove the USB drive
• Disconnect power

The NVR will reboot automatically after completion. After reboot navigate to: Menu Setup >> System >> System Information >> Verify software shows: V8.2.4-20251120

Upgrade Wireless Cameras: WF4KC2 Firmware Upgrade Through NVR

• The wireless cameras must be paired, and have a well charged battery not less than 50%
• Upgrade one camera at a time.
• Insert the USB flash drive with the WF4KC2 firmware into the NVR's front panel USB port.
• Go to: Setup >> System >> IP Camera Maintain >> Camera Upgrade
• Select the wireless camera channel (for e.g., CH1) you want to upgrade by ticking the checkbox.
• Click Select File.
• Choose the WF4KC2 firmware file from the USB drive. Click OK.
• Click Camera Upgrade.
• Enter the administrator password when prompted.
• The camera upgrade will begin. Upgrade time is typically 3 to 5 minutes per camera.
• Once you see the Exit tab, it means the upgrade has been completed and the camera will produce an audible beeping sound.

During upgrade:

• Do not power off the NVR.
• Do not power off the camera.
• Do not remove the USB drive.

After completion, navigate to Menu Setup >> Channel >> Wireless Camera >> Verify camera version shows: V34.21.5.2_251011

Upgrade Order

• Perform upgrade only in local network using the HDMI monitor connected to the NVR recorder.
• Do not attempt to upgrade remotely.
• Upgrade the WF4KN NVR first.
• After successful reboot, upgrade each WF4KC2 camera. Upgrade one camera at a time.

If the NVR or a Camera Fails to Upgrade

• Verify you used the correct firmware file for the specific device model.
• Check the current software version on the NVR or camera; it may already be up to date.
• Confirm the camera battery is sufficiently charged before starting the upgrade.
• Confirm the camera is paired and online prior to upgrading:
• If the camera appears as "Offline" under System > Maintenance > IP camera Maintain >> Camera Upgrade, it is in sleep mode.
• If you wish to wake the camera by triggering motion in front of it, or click the "Play" button on its live preview.
• The status will change from Offline to Online once the camera is active. Reboot the NVR, then retry the upgrade.
• If the firmware file is not detected, swap to a different USB drive and recheck the file is not corrupted.