: The device will automatically update the firmware. This process may take a few minutes, and the device might reboot several times. Do not interrupt the process or turn off the device.
| Error | Solution | | :--- | :--- | | | USB must be FAT32; file name must be exactly update.dat . | | Device freezes on logo | Perform a "Factory Reset" via the reset pinhole, then re-update. | | Fingerprints lost | Restore your backup via USB Management > Restore Data . | Zkteco Update Firmware
⚠️ Warning: Wrong file = Bricked device. Backup first! : The device will automatically update the firmware
: If the firmware file you downloaded is zipped or in another compressed format, extract it to obtain the firmware file (usually with a .bin or .apk extension, depending on the device). | Error | Solution | | :--- |
Keeping your ZKTeco firmware current is not a luxury—it is a security necessity. By following this guide, you understand the risks of power loss, the importance of directory structure ( ZKFW/update/ ), and how to recover from errors.