MP2iec and MP3iec Controller Firmware Upgrade Guide (Web Server Classic)

This document provides step-by-step instructions for upgrading firmware on MP2iec and MP3iec controllers using Web Server Classic, applicable to firmware versions v3.0 and earlier. It includes critical notes on the two-step upgrade process for versions prior to 1.1.1, supervisor mode activation, and the transition to WebUI for firmware v3.2 or later.