Zkteco Update Firmware =link=

If power fails during update or wrong file is used, the device can become non-functional (needs factory recovery or service).

Format a USB drive to FAT32 (not NTFS/exFAT). Zkteco Update Firmware

If your fingerprint attendance machine is acting glitchy or freezing, a firmware update usually fixes it. If power fails during update or wrong file

Firmware updates generally do not delete user data (fingerprints/logs), but it is standard safety protocol to backup first. Zkteco Update Firmware

Maximize Security & Performance: A Complete Guide to ZKTeco Firmware Updates