If a attempt fails and the device shows a black screen or a blinking blue light, you have a "bricked" device. Recovery is possible but technical.
Do not rely on physical appearance. Turn the device over or navigate to the to find the exact model (e.g., MB160-V2.0 , K30 Pro , FaceDepot-7B ). Zkteco Update Firmware
to get the specific firmware file for your model. Do not use files from third-party sites. Prepare USB: If a attempt fails and the device shows
: Visit the ZKTeco Download Center or the European Download Zone to find the matching firmware for your specific hardware. Zkteco Update Firmware
This is the most common way to update standalone biometric terminals. ZKTeco Colombia Obtain Firmware: ZKTeco Technical Support