This comprehensive guide explains how to install custom firmware on compatible Antminer models using ePIC’s UMC OS and the RigRunner installer. Designed for miners running Amlogic stock control boards, UMC OS provides a powerful alternative to hardware replacement by delivering advanced bitcoin mining firmware features directly onto existing equipment.
The guide walks users through system requirements, compatible stock firmware versions, and step-by-step installation instructions for both Windows and macOS. With RigRunner, fleet operators can scan IP ranges, detect miners, and deploy firmware at scale without command-line complexity. Once installed, users gain access to ePIC Webdash for real-time monitoring, cooling configuration, pool management, and advanced performance tuning.
Key features include Perpetual Tune (Voltage Optimizer, ChipTune, and Board Tune), overclocking capabilities, hashrate targeting, voltage optimization, and intelligent thermal throttling. The firmware supports popular Antminer models including S19j, S19 XP, S19K Pro, S21 series, and T21, making it a versatile custom Antminer firmware solution.
Operators can choose between a license key or a competitive 1.5% dev fee model, providing flexibility in operational strategy. For miners seeking stability, efficiency, and granular control, UMC OS represents a scalable, performance-driven bitcoin mining firmware solution optimized for modern mining infrastructure.