SSC600 Protection Relay Firmware Update Release 1.3.1

This document details firmware update release 1.3.1 for the SSC600 1.0 Feature Pack 3 protection relay, including usability improvements and bug fixes related to security events, firmware update robustness, PRP network communication, IEC 60870-5-104 control modes, and network segregation. It also provides update procedure guidance, product identification via order code, and notes that the update is cumulative with no new functionality introduced.