Firmware for Bitmain Antminer BTC & LTC Miners

We are an official Vnish partner and authorized distributor of custom firmware for Bitmain Antminer models that mine BTC and LTC. This partnership ensures reliable, fully supported firmware that helps optimize performance, reduce power consumption, and unlock advanced features such as per-chip tuning and watchdog control.

It allows you to fine-tune all performance parameters, optimize watt-per-terahash ratio, and keep your miner running even if only one hashboard is operational — something stock firmware doesn’t support.

Please note that this firmware includes a 3% developer fee, which is easily offset by the electricity savings. Read more about the benefits here.

Disclaimer: We are not responsible for any issues resulting from firmware installation if it is performed by third parties or not according to our instructions. Installing third-party firmware may void your factory warranty.

If you want us to take full responsibility for firmware performance and keep your original warranty valid, we offer Remote Miner Diagnostics & Firmware Upgrade — a professional service performed by our certified team.

Bonus: Run our firmware for over 30 days and receive a 5% discount on repair services*.

Download Antminer Repair Firmware v1.2.7 – Full Archive with Installation Tools

Antminer Repair Firmware

* To qualify for the 5% discount, the miner log must show the first launch date of our firmware to be at least 30 days prior to your repair request.

For optimal use, please ensure you choose the correct firmware version that matches your Antminer model. If you have any questions or need assistance, feel free to contact Antminer Repair LLC, or message us directly on Telegram or WhatsApp. You'll be chatting with a real person, not a bot — we respond during Florida daytime hours. If it's night here, replies may be delayed.

Technical FAQ

Q: Can I use Vnish firmware on an Antminer if one of the hashboards is faulty?
A: Yes. Unlike stock firmware, Vnish custom firmware allows the miner to continue operating even if only one or two hashboards are active. This helps reduce total downtime while you arrange a proper hashboard repair service.
Q: Can Vnish firmware run an Antminer with only 2 working hashboards?
A: Yes. One of the main advantages of Vnish firmware is that it can keep an Antminer running even when only two hashboards are working, unlike stock firmware which may stop mining entirely.
Q: Does Vnish firmware reduce power consumption on Antminer S19 and S21?
A: Yes. Vnish firmware helps improve efficiency on models like the Antminer S19 and S21 by optimizing the watt-per-terahash ratio. In many cases, miners achieve lower power usage while maintaining strong performance.
Q: How does Vnish firmware help reduce electricity costs during operation?
A: It optimizes the watt-per-terahash ratio. By using per-chip tuning, the firmware can lower power consumption while keeping hashrate high. In many cases, the electricity savings more than offset the 3% developer fee.
Q: Is the 3% Vnish DevFee worth it for Antminer miners?
A: For many miners, yes. The improved efficiency, better tuning control, and reduced downtime often make the 3% Vnish DevFee worthwhile, especially when compared with stock firmware limitations.
Q: Will my factory warranty remain valid after installing custom firmware?
A: Installing third-party firmware usually voids the Bitmain factory warranty. If you choose our Remote Miner Diagnostics & Firmware Upgrade service, we handle the process professionally to help ensure stable operation and correct setup.
Q: Can I install Vnish firmware on an Antminer remotely?
A: Yes. If you are not comfortable installing firmware yourself, we offer a Remote Miner Diagnostics & Firmware Upgrade service to help configure Vnish firmware correctly and safely.
Q: How do I choose the correct Vnish firmware version for my Antminer model?
A: You should always match the firmware version to your exact Antminer model and control board type. Installing the wrong version can cause instability or failed startup, so proper model verification is important before upgrading.
Q: What should I do if my Antminer S21 or S19 starts overheating after a firmware upgrade?
A: You should immediately review your Watchdog settings, fan behavior, and overclocking profile. Vnish firmware gives you more control, but temperature limits must be set correctly. In most cases, Auto-tuning is the safest starting point for your cooling environment.
Q: Is Vnish firmware better than stock firmware for unstable Antminers?
A: In many cases, yes. Vnish firmware offers more flexibility, better tuning options, and improved tolerance when a miner is partially degraded, which can make it a better choice than stock firmware for unstable Antminers.