: Select the firmware file stored on your PC and click "Upgrade." Ensure the connection remains stable throughout the process. Critical Precautions Upgrading Firmware & Rebooting Device Feb 29, 2016 Download Center - ZKTeco Home> Support > Download Center. System Update Notification - ZKTeco
A: Not recommended. A WAN update with packet loss can brick the device. Use a VPN or local LAN only. zkteco firmware update download