If your IPD amplifier has been locked and you do not know the password, you can override by using a generic password which is simply 'Password' (with uppercase 'P')
This will allow you to re-install the IntelliDrive firmware and reset the unit back to factory settings. Please note that in doing this you will lose any presets saved on the amplifier.
If this does not work, please contact your nearest Lab Gruppen service agent. You can find details of your nearest service centre here