| Problem | Possible Cause | Solution | | :--- | :--- | :--- | | | You are not logged in as admin. The current user has limited rights. | Use admin credentials or perform the Engineering Menu reset (Method 2). | | Device freezes during reset | Power interruption or corrupted firmware. | Perform a power cycle (unplug for 30 seconds). If still frozen, contact ZKTeco support for a firmware reflash via USB. | | After reset, device still asks for old password | The reset was incomplete. Only logs were cleared, not settings. | Repeat the reset but select "Restore Factory Settings" in the Boot Menu. | | Touch screen unresponsive after reset | Firmware glitch or hardware failure. | Try a cold boot. If the issue persists, connect to PC software to issue a reset command remotely. | | Reset successful but fingerprint sensor not working | The calibration data was erased. | Go to Menu > System Settings > Sensor Calibration and recalibrate. |
Carefully remove the battery or use a jumper wire to short the clear CMOS pads (labeled as RST or RESET near the chip) for 10 seconds. Reinsert the battery and close the housing.
If you can still access the menu, this is the safest and easiest method. Press the button on your UA300 terminal. Navigate to System Settings or System Config . Select Factory Reset or Clear Data . zkteco ua300 factory reset
After performing a factory reset:
Detailed hardware instructions can also be found in the ZKTeco Admin Password Reset guide from . Important Considerations Before You Reset | Problem | Possible Cause | Solution |
All historical attendance logs and transaction records stored locally on the device memory will be permanently wiped.
: Note the exact time shown on the device's home screen (e.g., 14:20). Generate a Super Password Subtract the current screen time from Square the result ( The resulting number is your Super Password for that specific minute. Enter Service Mode . When prompted for an ID, enter and enter your generated Super Password. Clear Admin : Once in the menu, go to and select Clear Admin Privileges | | Device freezes during reset | Power
The device is now at default settings: IP 192.168.1.201 , Port 4370 , Password 1234 .
and connect using the terminal's IP address (default is usually 192.168.1.201 Once connected, go to Device Operation Advance Function Clear Admin Privilege to remove the lock without deleting all data, or Initialize to perform a full factory reset. Option 3: Time-Based Super Password (When Locked Out)
Once inside, navigate to System > Reset Opts or Data Management to clear admin privileges or perform a full factory reset.
You can usually find the serial number (SN) on a sticker on the back of the device. If the device is functional, you may also find it by navigating through the menu: look for System Info , Device Info , or About . Another trick is to press and hold the ESC key on the device, which may display the serial number on the screen.