Using ISPSoft, perform a "Factory Reset" via the memory card. Warning: This deletes everything (program, registers, and password). You will need a backup file.
Older unlock tools often fail against newer Delta firmware (versions 3.0+ for DVP, or the entire AS series). As Delta enhances its cybersecurity measures to prevent intellectual property theft, legacy brute-force tools become obsolete. Hence, the demand for software is not a marketing gimmick—it is a technical necessity. delta plc password unlock software new
Never use unlock software on a machine still under OEM contract. You may unlock it, but you also unlock the OEM’s right to deny support. Using ISPSoft, perform a "Factory Reset" via the memory card
If you do not need to save the existing program and just want to reuse the hardware, you can perform a factory reset using Delta's official programming tools. Older unlock tools often fail against newer Delta