I think it is worth trying because the service manual says:
5801-011 (memory clean NCS) - Initializes the system default and interface settings (IP address also), SmartDeviceMonitor for Admin, WebStatusMonitor settings, and the TELNET settings.
Another solution would be to make a upload a NVRAM a good equipment for a sd card, then do a download of data from the sd card to NVRAM bad equipment.
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