Zkteco Ua300 Factory - Reset

Once the ZKTeco UA300 reboots after a factory reset, it behaves like a new device. Follow these steps to get it running again:

The ZKTeco UA300 is a fingerprint-based access control and time attendance terminal. It supports:

Over time, issues such as administrator lockout, communication errors, or corrupted configurations may necessitate a factory reset—restoring the device to its default out-of-box state. zkteco ua300 factory reset

Keywords: ZKTeco UA300 factory reset, restore default settings, access control reset, biometric terminal recovery

The ZKTeco UA300 is one of the most popular biometric access control and time attendance devices on the market. Known for its sleek 3.5-inch touch screen, high-speed processor, and versatile communication options (TCP/IP, USB, Wi-Fi), it is a workhorse for small to medium-sized businesses. Once the ZKTeco UA300 reboots after a factory

However, even the most reliable hardware can run into issues: forgotten administrator passwords, networking errors, database corruption, or sluggish performance. In many cases, a factory reset (also known as a hard reset or master reset) is the only solution to bring the device back to life.

This article provides a deep dive into everything you need to know about performing a ZKTEco UA300 factory reset. We will cover three distinct methods, pre-reset precautions, post-reset configuration, and troubleshooting common errors. the device does not support it.

Open reset.dat with Notepad. Type the following exactly (case-sensitive):

[SYSTEM]
RESET=YES
DELETEALL=YES

Save the file and safely eject the USB.

Power off the UA300.

Insert the USB drive into the UA300’s USB host port (usually on the bottom or side, under a rubber cover).

Power on the device. Do not touch any buttons.

The UA300 will detect the reset.dat file automatically. The screen may display “Update…” or “Reading USB.”

After 30 seconds, the device will beep twice and reboot. The reset is complete.

Remove the USB drive.

Note: This method does not work on all UA300 firmware versions (specifically pre-2019). If nothing happens after 2 minutes, the device does not support it.

If you are performing this reset to solve a network connection issue, be aware that resetting the device may change the IP address back to the default. You may need to connect the device directly to a PC via Ethernet and change the PC's IP to the same subnet (e.g., 192.168.1.x) to reconfigure the device's network settings.