When you downgrade or upgrade the customize firmware for the face deep series device. The device will require to forcible upgrade firmware mode to downgrade or upgrade the firmware.
Click the “Update” ---- to firmware upgrade the interface. Please quick click the “USB Disk” icon in the screen (10-20 times) till popup the below interface. Input the “12345” and click “Enter” to forcible upgrade firmware mode. And click “Start” to upgrade the firmware.