* The hardware version of the relay can be verified in the identification label or in the bottom bar of EnerVista 650 Setup software version 3.00 or later when communicating with the relay.
If the identification label of the relay does not show any hardware version:
- Models with options 4 and 5 for I/O boards or option 6 for IEC61850 protocol are always hardware version 01.
- Otherwise hardware version is 00.
It is mandatory to maintain version compatibility between firmware and boot code in the upgrade procedure. See boot code release notes for more details.