Keep all industrial passwords, OEM keys, and security codes stored in a secure, encrypted corporate password vault accessible to authorized engineering personnel.
This mismatch suggests:
If you need to repurpose the physical HMI hardware and do not need to preserve the existing program, you can bypass the password by performing a factory reset.
This method is 100% effective but requires soldering skills and a steady hand.
If you have access to the original, uncompiled project file on your engineering PC, you do not need to know the old password to overwrite the HMI. Open . Compile the project.
Disclaimer: This article is for educational and entertainment purposes only. Always respect applicable copyrights, terms of service, and local laws regarding software use and device ownership.