REX610 Firmware Update Release 1.1.0

This document details the scope and contents of firmware update release 1.1.0 for the REX610 protection relay, including new hardware support, protection functions, control, measurement, and condition monitoring features. It also specifies the required tools (PCM600 2.12 or newer, Connectivity Package 1.1.0) and the update procedure, noting that all units manufactured after May 25, 2023 include this firmware.