How to Recover UMC OS on an Antminer

Need to recover UMC OS on an Antminer? This guide explains the microSD recovery process step by step, including firmware image selection, older-version upgrade paths, LED behavior, calibration, and post-flash access through Dashboard and Webdash. A practical guide to Custom Antminer Firmware for Bitcoin Mining.

Learn how custom Antminer firmware like UMC OS uses advanced tuning algorithms—Voltage Optimizer, Board Tune, and Chip Tune—to improve efficiency, stability, and hashrate in Bitcoin mining operations.

ePIC today announced a significant reduction in development fees for UMC OS, its proprietary Bitcoin mining firmware. The development fee has been lowered to a market-leading 1.5%.

TORONTO, May 27, 2025 /PRNewswire/ — ePIC Blockchain, a leading developer of mining firmware and systems, proudly announces the release of two powerful third-party firmware solutions: UMC OS and AltairOS. Built on the same robust technology behind ePIC’s Universal Mining Controller (UMC), both offerings are now available for S19J and newer air-cooled Bitcoin mining machines, including immersion models converted from air-cooled units.

Two Paths, One Proven Core

AltairOS – Powered by ePIC

Tailored for home miners and Bitcoin enthusiasts, AltairOS delivers the full power of ePIC’s firmware suite with an accessible 2.2% developer fee. It is now available through altairtech.io and supports USB port installation for AMLogic-based machines (expanded compatibility coming soon).

“We’re thrilled to bring more firmware options to the broader mining community. AltairOS gives everyday miners the tools they need to improve efficiency, gain insight, and stay competitive—without needing to invest in new hardware,” said Aviral Shukla, Founder of Altair Technology.

UMC OS – Powered by ePIC

UMC OS offers the same features and performance, with a focus on institutional miners exploring licensing at scale. It is available now via epicblockchain.io with a 2.5% developer fee as a trial option. Enterprises interested in licensing are encouraged to contact ePIC for tailored deployment options.

“UMC OS is designed to scale. Whether you’re running hundreds or thousands of machines, our firmware delivers precise control and operational resilience. It’s firmware built for the future of institutional mining,” said Earl Mai, CTO of ePIC Blockchain.

Unified Feature Set, Flexible Delivery

Both AltairOS and UMC OS include:

  • Perpetual tune
  • Temperature-aware auto-throttling
  • Detailed diagnostics down to the chip level
  • Intuitive web-based GUI
  • SD card installation (currently supporting AMLogic control boards)

For more information or to begin trialing UMC OS, visit epicblockchain.io or contact info@epicblockchain.io.

To access AltairOS, visit altairtech.io/altairos/.

Both firmware solutions are proudly developed and supported by ePIC Blockchain.

About ePIC Blockchain Technologies

Based in Toronto, Ontario, ePIC Blockchain stands at the forefront of semiconductor and system design for Proof of Work (PoW) Blockchains. Offering a range of products and services, including Universal Mining Controller (UMC), Fleet Enhancement Kits, and customized mining systems, ePIC is dedicated to improving the performance and efficiency of mining operations worldwide.

Key Features

  • Infrastructure cost savings: The platform is projected to significantly reduce infrastructure and networking equipment costs.
  • Enhanced capacity and uptime: Aimed to boost capacity and improve uptime by redesigning the system with efficient components.
  • Form factor’s simultaneous compatibility and innovation: The redesigned chassis maintains compatibility with existing mining facility form factors.
  • Smooth user experience and serviceability: Designed with user convenience and serviceability at its core.
  • Enhanced electrical Infrastructure efficiency: Accommodates all plug types and balances power across phases, minimizing harmonics and heat.