If you use software like ZKBioSecurity or ZKTime.net 3.0 , check for built-in update prompts that may alert you to newer terminal firmware. Step-by-Step Firmware Update Guide
Do not turn off the power during the process. The device will reboot automatically once finished. Verify the new version in the System Info menu. Why You Should Update Regularly K40 Pro - Biometric Attendance System Mumbai - ZKTeco India
Maintaining your ZKTeco K40 Pro Go to product viewer dialog for this item.
Verify your current firmware version by entering the device menu ( Main Menu > System > System Info ). Confirm that your hardware is compatible with the version you intend to download.
Download * K40 Pro Data Sheet. 2.5MB. 2026-01-13. * K Series User Manual. 2.52MB. 2024-08-20. ZKTeco India K40 - ZKTeco
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