Hash More with Less.
More performance. Less power. Innovative auto-tuning. From our team to yours, now you too can experience the technology that sets MARA apart.
Realize your miners’ true potential
Gain an edge and stay ahead of the curve with MARAFW.
Optimize Performance
Boost hashrate while maintaining optimal efficiency.
Auto-Tune Like Never Before
Set it and forget it. Quickly optimize miners in minutes.
Overclock or Underclock with Ease
Overclock in seconds to increase BTC output or underclock for peak efficiency.
Safeguard Miners
Intelligent thermal protection activates in seconds to prevent overheating.
REAL RESULTS
Increase hashrate more efficiently than the competition.
S19J PRO: EFFICIENCY VS. HASHRATE
Benchmark data provided by altairtech.io
Real Voices
“Deploying MARAFW across our 15MW S19j Pro fleet yielded outstanding results: up to 35% overclocking, 99% uptime, and industry-leading efficiency at 25-29W/TH. Zero Two is thrilled with the results and our partnership with MARA!”
Abdulrahman Hamdy
Head of Technology at Zero Two
Get a complete overview of
your miner’s health and performance.
Select Automatic Tuning to Intelligently Optimize for You.
Choose a Mode That Suits You Best and Set a Target.
Switch Freely Between Environment Profiles.
Add Multiple Backup Pools to Switch Between Them Automatically.
Gain Insight Into Each Chip Inside Your Hash Board.
Troubleshoot Using Detailed Logs and Export Them to Your Mining Software.
Large-Scale Installation
Deploy across large fleets remotely over the air or via an SD card with minimal downtime.
Immersion Ready
Optimize immersion profiles and control or bypass fan checks.
In-House Design
Our secure proprietary mining software seamlessly integrates with all standard APIs and implements numerous custom APIs for advanced features.
Compatible with the Latest Generation of Antminers.
MARAFW supports a wide variety of Antminer S19 and S21 series models, which can be installed remotely over the air or via an SD card.
SUPPORTED HARDWARE
S19
S19J
S19 PRO
S19J PRO
S19 XP
S19J PRO+
S19K PRO
S21
T21
S21 Immersion
S21 Pro
S21 XP
Integrate Seamlessly with Your Preferred Mining Software.
MARAFW is compatible with Foreman, Awesome Miner, BTCtools, and others.
Unleash the full potential of your Bitcoin mining rigs
Designed in-house by MARA and preloaded with MARA's proprietary firmware – MARAFW – MARA UCB 2100 is a replacement control board for Bitmain Antminers.
Improve profitability, efficiency, and stability. Upgrade to MARA UCB 2100 today and start mining like MARA.
More than Just a Control Board
Unlock the hidden capabilities within your ASIC miners.
Level Up Your Mining Game
Boost hash rate. Auto-tune like never before. Overclock or underclock with the click of a button. MARAFW can take your mining game to the next level.
Integrate Seamlessly
Our control board supports some of the industry’s leading mining rigs. Simply swap your miner’s current control board and connect it to a mining pool of your choice.
Everything you need to know about MARAFW
What is MARAFW?
MARAFW is custom firmware designed to optimize the individual chip settings of Bitcoin miners, improving their performance and efficiency while stabilizing operations. It also allows for better power consumption management and greater control over the mining hardware.
What features does MARAFW offer?
MARAFW offers several key features to optimize Bitcoin miners: It increases hash rate while maintaining optimal efficiency, allows quick auto-tuning or manual customization of settings for targeted performance, and provides options for overclocking to boost bitcoin production or underclocking for peak efficiency. Additionally, MARAFW includes intelligent thermal protection to prevent overheating, thereby protecting the longevity of miners.
Which mining hardware models, power supply units (PSUs), and control boards (CBs) does MARAFW support?
MARAFW supports most Antminer S19, S21, and T21 series. It works with all Bitmain stock control boards and the MARA UCB 2100. For power supplies, it supports any Bitmain stock PSU and third-party PSUs compatible with Bitmain's firmware. If you encounter compatibility issues, please contact our support team at firmware@mara.com
Which mining pools is MARAFW compatible with?
There are no limitations on which mining pools can be used with MARAFW. You can configure multiple pools using the dashboard or using common mining management tools such as Foreman or BTC Tools.
How do I install MARAFW?
The installation procedure depends on the control board type. Xilinx, AMLogic, BeagleBone, and Cvitek boards can be updated over the air (OTA). Initially, our team must perform installations, which our support team can guide you through.SD card installations are an option for Xilinx and BeagleBone boards. Please follow our step-by-step guide or detailed instructions.
Note: Cvitek boards need a MARACV board installed first.
Everything you need to know about Control Board
What is MARA UCB 2100?
MARA UCB 2100 is a replacement control board that comes preloaded with MARA’s proprietary firmware – MARAFW.
What are the benefits of upgrading to MARA UCB 2100?
MARA UCB 2100’s primary benefits come through MARAFW, which offers several key features to optimize Bitcoin miners: It increases hash rate while maintaining optimal efficiency, allows quick auto-tuning or manual customization of settings for targeted performance, and provides options for overclocking to boost bitcoin production or underclocking for peak efficiency. Additionally, MARAFW includes intelligent thermal protection to prevent overheating, thereby protecting the longevity of miners.
Which mining hardware does MARA UCB 2100 support?
MARA UCB 2100 supports a majority of Bitmain Antminer S19 and S21 series models. However, you should check your control board package for an accurate list of models supported by your board.firmware@mara.com
Supported Miners:
- S19J
- S19J Pro
- S19 XP
- S19J Pro +
- S19K Pro
- S21
- T21
What does the lifetime license offer?
You can purchase the MARA UCB 2100 with or without the Lifetime License (LTL). Opting for the standard offering without the license incurs a 2.0% developer fee, whereas the premium offering includes the LTL and carries no developer fees, for as long as you are using the control board.
Which mining pools is MARA UCB 2100 compatible with?
There are no limitations on which mining pools can be used with MARA UCB 2100. You can configure multiple pools using the MARAFW dashboard or using common mining management tools.
How do I install MARA UCB 2100?
Simply swap your miner’s current control board and connect it to a mining pool of your choice. If you have any questions, reach out to firmware@mara.com.


Unlock the ultimate solution for managing and optimizing your mining fleet with MARATools. Designed for miners, it offers a seamless process for firmware installation, configuration, and comprehensive management of your ASICs. Experience efficiency and control like never before.
Ready to optimize your performance and hash more with less?
We're here to help. To schedule a call or a demo with MARA, complete this form.
Attention MARAFW Users: Please note that Bitmain's latest stock firmware update may block usage of third-party ASIC firmwares, including MARAFW, from March 2024 onwards. We are working on it and will provide updates accordingly. Thank you!
Email: firmware@mara.com