Troubleshooting

Device Not Found

• Confirm that the USB cable supports data transfer.
• Try another USB port and click Refresh.
• Check Windows Device Manager for unknown devices or driver errors.
• Close other software that may be using the device.

Driver Not Installed

Install the required driver, reconnect the device, and click Refresh. If the problem remains, check the device status and driver provider in Windows Device Manager.

Connection Failed

This is usually caused by device occupation, driver problems, or an unsupported device state. Close other tools, reconnect the device, and try again.

Firmware Catalog Is Empty

• Confirm that the PC can access the release server.
• Click Check update or Re-download.
• For offline environments, use the firmware release package provided by Kunhong technical support.

Firmware Shows Not Applicable

Installability depends on the device model, device state, and firmware release. Click Refresh info and Refresh first. If it still shows Not applicable, choose matching firmware or contact technical support.

Device Disconnects After Update

Firmware installation, mode switching, and upgrade mode can make the device re-enumerate. Wait a few seconds, reconnect the device if needed, return to Select device, and click Refresh.