ZKTeco does not host open-source firmware repositories due to regional hardware variations. Follow these steps to obtain the correct, authorized file. Step 1: Identify Your Current Firmware and Hardware Version
For the most accurate "updated" version (tailored to your device's Serial Number and MAC Address), it is highly recommended to email support@zkteco.com or contact your local distributor. Some upgrades, like those for BioTime Pro compatibility, require a generated license based on your hardware details. Step-by-Step Update Process (USB Method) zkteco k40 pro firmware download updated