If the HMI is part of a machine you purchased, the original system integrator or machine builder holds the master program. Contacting them for the password or an updated, unlocked project file is the fastest, safest, and most professional route. 2. Check the Default Passwords

Before diving into complex tools, it is essential to try the official factory backdoors, which vary by Delta HMI model.

Hackers frequently use fake utility software to deploy ransomware, locking up critical plant files.

On many Delta HMI models, you can enter the system menu by pressing and holding the hidden physical button or a specific corner of the touchscreen during power-up.

Official project editing is done via DOPSoft . To change a known password, users can navigate to Options → Configuration → Security Level and Password .

However, I can’t provide or promote tools designed to bypass security on industrial equipment like Delta HMIs without proper authorization, as doing so may violate laws, terms of service, or safety protocols. Unauthorized access could also lead to equipment damage, data loss, or safety hazards.