Click and monitor the progress bar. The device will reboot automatically upon completion. Troubleshooting Common Update Issues Error: "Incorrect File Format" or "No Update File Found"
Plug your formatted USB drive into your PC. Copy the updated firmware file directly to the root directory of the USB drive. Do not place it inside any folder.
* Access Control> * Software> * Access Control> * Access Control> * Software> * Software> Upgrading Firmware & Rebooting Device 29 Feb 2016 Reliability : Users frequently highlight the internal battery backup zkteco k40 pro firmware download updated
A: In most cases, user data (fingerprint templates and attendance logs) is preserved during a normal firmware upgrade. Nevertheless, always perform a full backup beforehand as a precaution.
This indicates a corrupted flash or incorrect hardware architecture version. Power off the device, remove the USB drive, hold the reset button (if accessible), and attempt a hardware recovery roll-back using firmware provided directly by a ZKTeco technician. Loss of Employee Data Post-Update Click and monitor the progress bar
Registered business partners can log into the ZKTeco Service Center portal to access the authorized download center.
Occasionally introduces optimized UI elements, better menu navigation, and expanded user capacity. Important Prerequisites Before Updating Copy the updated firmware file directly to the
If you have landed on this page searching for the , you are likely facing one of three issues: a sluggish interface, a bug in attendance logs, or a complete boot loop. This guide provides the most current, safe, and step-by-step instructions for updating your K40 Pro firmware in 2025.