: Recent updates are highly recommended as they focus on critical system security improvements
ZKTeco produces hundreds of models: K40, MB460, F18, SF300, TFT, SpeedFace, ProFace, and the list goes on. Each model has sub-variants (e.g., K40 vs. K40 Pro). Installing firmware meant for the K40 Standard onto a K40 Pro will cause: zkteco firmware update download