Need help with NFS-320E loss password

Someone has changed my NFS-320E programming password. Before I took care of the panel, many hands have worked on it. Nobody admit has changed the password. If anyone can help me on this, would be appreciated very much. I have the error code.

Former Notifier tech here, what is the firmware version on the panel? You should be able to check that with out a password.

The firmware version is:
BOOT 018.000.001 ENG
APP 018.000.002 ENG

Thanks for your reply.