Connect your PC to the HMI’s COM port (usually COM1 – RS-232). Use a 2-3-5 pin null modem cable. Do not use Ethernet; these tools rely on serial communication.
A: No. A standard firmware update preserves the user project and its password. A full firmware reflash with a bootloader patch can remove it, but again, that voids the warranty. Delta Hmi Password Unlock Software
Introduction: The Forgotten Password Dilemma Connect your PC to the HMI’s COM port
Open the third-party software as Administrator. Select the correct COM port number. Click "Read Password" or "Unlock Project." Delta Hmi Password Unlock Software