Guide du firmware VNish : installation, configuration et optimisation avancée

VNish Firmware: The Overclocker’s Firmware for Mineurs ASIC

Stock Bitmain firmware treats your mineur ASIC like a sealed appliance — see our guide de mise à jour du firmware Antminer for a general firmware overview. Fixed frequencies. Fixed voltages. No per-chip control. No power scheduling. No immersion mode. No way to disable a single failed chip to keep a hashboard running. And if you mine Scrypt on an L3+ or L7 — firmware d’origine offers you nothing beyond what Bitmain decided was acceptable at the factory. VNish exists to tear open that locked box and hand you every control lever.

VNish is a commercial ASIC firmware platform developed by a Russian engineering team with over eight years in the mining firmware space. Where Braiins OS+ emphasizes watt-level cible de puissanceing and Stratum V2, and LuxOS focuses on Luxor pool integration — VNish is the firmware built for miners who want maximum granular control. Per-chip frequency adjustment. Per-chip voltage tuning. The ability to disable individual dead or degraded chips while keeping the rest of the hashboard operational. Aggressive overclock profiles that push hardware to its silicon limits. Immersion cooling mode that eliminates fan checks entirely. Auto-scheduling that shifts hashrate profiles based on time-of-day electricity rates. And critically for Scrypt miners — full support for the L3+, L7, and L9 series that neither Braiins OS+ nor LuxOS covers at all.

The VNish philosophy is simple: your hardware, your rules. If you want to push an S19j Pro to 120 TH/s and accept the thermal tradeoff, VNish lets you. If you want to undervolt an aging S9 to 800W for a chaufferette build, VNish lets you. If you want to run an S21 submerged in dielectric fluid with no fans at 250+ TH/s, VNish’s immersion mode was built precisely for that scenario. No other firmware gives you this breadth of hardware control across both SHA-256 and Scrypt mining platforms.

Ce guide is the definitive resource for installing, configuring, and optimizing VNish firmware on your Antminer hardware. Nous couvrons every supported model, every installation method (SD card, Hashcore Toolkit, SSH), auto-tuning and manual per-chip overclocking, immersion mode configuration, Scrypt mining optimization, fleet management with ANTHILL, troubleshooting, and a full comparison with Braiins OS+, LuxOS, and firmware d’origine. Whether you are squeezing a few extra terahashes from a home chaufferette or deploying across a fleet of immersion-cooled S21s, ce manuel vous couvre.

What Is VNish?

VNish is a commercial replacement firmware for Bitmain Antminer mineurs ASIC, developed by a Russian engineering team that has been building mining firmware since the early days of SHA-256 ASIC mining. The name has become synonymous with aggressive performance tuning — among professional miners, « running VNish » is shorthand for squeezing maximum hashrate from hardware.

Core Features

Per-Chip Auto-Tuning. When first installed, VNish runs an automatic tuning cycle that tests every individual ASIC chip on every hashboard. It sends progressively higher frequencies to each chip, identifies the stable operating ceiling, determines optimal voltage, and creates a chip-level performance map. High-quality silicon gets pushed harder. Weaker chips get conservative settings. Le résultat is a custom frequency/voltage profile unique to your specific machine — because no two miners are identical at the chip level, even when they rolled off the same Bitmain production line.

Manual Per-Chip Frequency & Voltage Control. This is where VNish separates itself from every competitor. While Braiins OS+ gives you a watt-level cible de puissance and lets the autotuner handle the rest, VNish hands you the controls directly. You can set the frequency and voltage for each individual ASIC chip on each hashboard. If chip #47 on hashboard 2 runs hot, you can drop its frequency by 25 MHz while keeping every other chip at full speed. No other production firmware offers this level of granularity. For advanced overclockers, this is the difference between squeezing out an extra 5-10% hashrate and leaving performance on the table.

Chip Throttling (Dead Chip Bypass). This is VNish’s most underrated feature — and arguably its most valuable for miners running older or repaired hardware. If an ASIC chip fails or becomes unstable, firmware d’origine typically shuts down the entire hashboard. VNish lets you disable individual bad chips while the rest of the chain keeps hashing. A hashboard with 3 dead chips out of 76 still runs at approximately 96% capacity instead of sitting idle in your rack. For miners with aging S17s, repaired S19s, or any hardware with partial chip failure, this feature alone justifies the firmware switch.

Power Capping. Set a maximum wattage ceiling and VNish automatically adjusts chip frequencies to stay within the limit. Similar in concept to Braiins OS+ cible de puissance mode, but VNish approaches it as a hard cap rather than a target — the firmware will never exceed the configured wattage, even temporarily during tuning. Useful for mineurs domestiques on limited circuits and for operators managing electrical capacity across a facility.

Auto-Scheduling. VNish includes a time-based profile scheduler that automatically switches between overclock, normal, and efficiency modes based on time of day. If your electricity rate is $0.06/kWh overnight and $0.12/kWh during peak hours, you can configure VNish to push maximum hashrate at night and drop to efficiency mode during the day — or shut down entirely during peak pricing. The miner handles the transitions automatically with no manual intervention.

Immersion Mining Mode. VNish provides a dedicated immersion cooling mode that disables vitesse des ventilateurs monitoring, fan error alerts, and fan-dependent thermal shutdowns. In immersion mode, the firmware relies entirely on température des puces sensors for thermal management, with configurable temperature thresholds optimized for dielectric fluid cooling. This is essential for anyone running immersion — firmware d’origine will throw constant fan errors and refuse to operate without spinning fans.

Scrypt Algorithm Support. VNish supports both SHA-256 (Bitcoin) and Scrypt (Litecoin/Dogecoin) mining hardware. The L3+, L7, and L9 series are fully supported with auto-tuning, overclocking, and efficiency profiles. Neither Braiins OS+ nor LuxOS supports Scrypt hardware at all, making VNish the only serious custom firmware option for Scrypt miners.

AsicBoost. VNish implements version-rolling AsicBoost, the mining optimization technique that reduces the energy required per hash by exploiting properties of the SHA-256 algorithm. On supported hardware (S9 and newer), this provides a measurable efficiency improvement that stacks on top of per-chip tuning gains.

Dev Fee Model

VNish is free to download and install. Tvoici no per-device license fee, no subscription, and no upfront cost. Revenue is collected through a developer fee (DevFee) — a percentage of your miner’s hashrate that is directed to VNish’s pool during operation. The dev fee varies by hardware model:

Volume discounts are available for large-scale deployments. Mining hotels and colocation providers can negotiate custom dev fee rates and add their own branding/logo to the firmware interface. Contact VNish directly for enterprise pricing.

The math on dev fees is the same as with any custom firmware: if VNish’s auto-tuning, overclocking, and efficiency features generate a 10-25% improvement in hashrate or efficiency, the 1.8-2.8% dev fee is a fraction of the performance gain. You come out substantially ahead compared to firmware d’origine.

Matériel compatible

VNish supports a broader hardware range than any competing custom firmware, including both SHA-256 and Scrypt mineurs ASIC. This is one of VNish’s key advantages — it covers models and carte de contrôle types that Braiins OS+ and LuxOS cannot.

SHA-256 Models (Bitcoin)

Scrypt Models (Litecoin / Dogecoin)

Carte de contrôle Compatibilité

One of VNish’s critical advantages over Braiins OS+ is carte de contrôle breadth. The S17/T17 series was manufactured with two different carte de contrôle types, and this matters enormously for firmware compatibility:

• Xilinx (Zynq) carte de contrôle — Supported by VNish, Braiins OS+, and LuxOS.
• Amlogic carte de contrôle — Supported by VNish ONLY. Neither Braiins OS+ nor LuxOS supports S17/T17 units with Amlogic boards. If you have an Amlogic-based S17 or T17, VNish is your only custom firmware option.
• CVITEK carte de contrôle — Found on some newer S19/S21 variants. Supported by VNish with specific firmware builds.

To identify your carte de contrôle type: access your miner’s interface web and check System > Vue d’ensemble, or physically inspect the carte de contrôle for manufacturer chip markings. When downloading VNish firmware, you must select the correct carte de contrôle version — installing the wrong build will fail.

Pre-Installation Checklist

Before you touch firmware, complete every step here. Skipping this checklist is how miners end up calling D-Central’s repair line with bricked hardware.

1. Backup Current Configuration

• Screenshot your entire interface web. Every page, every tab. Pool settings, network configuration, fan profiles, firmware version, miner status. On Windows: Win + Shift + S. On macOS: Cmd + Shift + 4.
• Export your configuration file if your current firmware supports it. On stock Bitmain firmware: System > Backup / Flash Firmware > Generate archive.
• Write down your pool settings manually. Pool URL, worker name, password, and any failover pool addresses. You will re-enter these in VNish.
• Record your miner’s MAC address and IP assignment. Naviguez vers System > Network and note whether the miner uses DHCP or a static IP. Static IP configurations need to be reconfigured after flashing.

2. Verify Your Exact Model & Carte de contrôle

• Confirm the exact model (e.g., S19j Pro, not just « S19 ») from the miner’s interface web or from the physical label on the miner chassis.
• Confirm the carte de contrôle type (Xilinx, Amlogic, or CVITEK) as described in the hardware section above.
• Note the current firmware version — you may need this if you ever want to revert to stock.

3. Download VNish Firmware

• Visit the official VNish website at vnish.com or vnish.group.
• Select your exact miner model and carte de contrôle type.
• Download the correct firmware package. For SD card installation, download the SD recovery image. For Hashcore Toolkit installation, download the Toolkit Full Pack which includes all models and auto-detects your hardware.
• Verify the download by comparing the file’s SHA-256 checksum against the value published on the VNish download page. On Windows: certutil -hashfile filename.zip SHA256. On Linux/macOS: sha256sum filename.zip.

4. Prepare Installation Media

• SD card: Use a card no larger than 16 GB, formatted as FAT32. Larger cards or NTFS formatting will cause installation to fail.
• For Amlogic cartes de contrôle: Use a USB flash drive with an OTG-USB adapter instead of an SD card. Amlogic boards use a Micro-USB port, not an SD card slot.
• Extract the downloaded firmware archive and copy all files to the root directory of the SD card or USB drive. Do not place files inside folders.

5. Sécurité électrique

• Ensure your alimentation is adequate for any planned overclocking. A stock APW12 handles 3,600W. Aggressive OC profiles on S19j Pro can push to 3,800W+ — verify your PSU and circuit capacity.
• If running at home, confirm your circuit breaker can handle the load. A 20A/240V circuit provides 4,800W max — leave at least 20% headroom.
• Ensure adequate ventilation or cooling capacity, especially if you plan to overclock.

Installation Methods

VNish supports three installation methods, each suited to different scenarios. The critical concept to understand is the difference between SD mode and NAND mode.

SD Mode vs. NAND Mode

This distinction is fundamental and unique to VNish’s installation approach:

D-Central’s recommendation: Always start with SD mode for your first VNish installation. Test auto-tuning, verify compatibility, confirm pool connections, and run for at least 24 hours before committing to NAND. Once you are confident VNish is stable on your hardware, move to NAND mode to eliminate the SD card as a potential point of failure.

Method 1: SD Card Flash (Recommended for First Install)

This is the safest and most forgiving installation method. The miner boots from the SD card while your original firmware d’origine remains untouched in NAND memory.

1. Éteignez the miner completely. Unplug the alimentation. Wait 30 seconds for capacitors to discharge.
2. Insert the prepared SD card into the carte de contrôle’s SD card slot. For Amlogic cartes de contrôle, insert the USB drive into the Micro-USB port using an OTG adapter.
3. Allumez the miner. The carte de contrôle will detect the SD card and boot from it instead of the internal NAND.
4. Attendez que the green LED on the front panel to light up and remain solid. This indicates VNish has successfully loaded. The process takes approximately 60 seconds.
5. Access the VNish interface web by navigating to your miner’s IP address in a browser. The default login is root / root (change this immediately).
6. Leave the SD card inserted. In SD mode, VNish runs from the card. If you remove the card and power cycle, the miner reverts to firmware d’origine.

Method 2: Hashcore Toolkit (Recommended for Fleet Deployment)

Hashcore Toolkit is VNish’s desktop application for managing firmware installations across one or many miners simultaneously. It installs VNish directly to NAND — no SD card required.

1. Download Hashcore Toolkit from the official VNish website. It is available for Windows, macOS, Linux, and Android.
2. Install and launch the application on a computer connected to the same network as your miners.
3. Scan your network. Hashcore Toolkit will automatically discover all Antminer devices on the local network and display them in a list with model information, IP address, and current firmware version.
4. Select target miners. Click on individual miners or select all miners of a specific model for batch deployment.
5. Start installation. The toolkit identifies each miner’s model and carte de contrôle type, selects the correct firmware build, and flashes it directly to NAND over the network. No physical access to the miner is required.
6. Monitor progress. The toolkit displays real-time installation progress for each miner. A typical NAND flash takes 3–5 minutes per device. The miner will reboot automatically after installation.

The Hashcore Toolkit Full Pack includes firmware for all supported Antminer models and carte de contrôle types. If you are unsure of your hardware specifications, use the Full Pack — the toolkit will auto-detect and select the correct firmware during installation.

For large deployments, Hashcore Toolkit version 1.6.0 and later supports remote installation across IP ranges, eliminating the need for physical access or SD cards entirely. You can deploy VNish to hundreds of miners from a single workstation.

Method 3: SSH Installation (Avancé)

For miners comfortable with the command line, VNish can be installed via SSH. This method provides the most control over the installation process.

1. Enable SSH on your miner if it is not already enabled. On stock Bitmain firmware, SSH is typically accessible with default credentials (root / root or admin).
2. Connect via SSH: ssh root@<miner_ip>
3. Transfer the firmware file to the miner using SCP: scp vnish_firmware.tar.gz root@<miner_ip>:/tmp/
4. Extract and run the installer: Follow the specific installation commands provided in the VNish documentation for your model. The exact commands vary by carte de contrôle type.
5. The miner will reboot into VNish after the installation completes.

SSH installation is best suited for advanced users, scripted deployments, or situations where the Hashcore Toolkit cannot reach a miner (e.g., behind a NAT or firewall). For most users, the SD card or Hashcore Toolkit methods are simpler and more reliable.

Post-Installation Configuration

After VNish is running, you need to configure the essentials before the miner starts earning. Access the VNish interface web by navigating to http://<miner_ip>/ in your browser.

1. Change the Default Password

The default login is root / root. Change this immediately. Naviguez vers System > Password and set a strong password. VNish also allows you to change or disable the SSH port for additional security.

2. Pool Configuration

Naviguez vers Miner > Pool Settings and configure your pools de minage:

• Pool 1 (Primary): Your main pool de minage URL, worker name, and password.
• Pool 2 (Failover): A backup pool that activates if Pool 1 goes down.
• Pool 3 (Failover): A second backup pool for maximum uptime.

For SHA-256 Bitcoin mining, use the stratum+tcp:// protocol prefix. For Scrypt mining (L3+, L7, L9), ensure your pool supports the Scrypt algorithm and that you are connecting to the correct port.

3. Auto-Tune Configuration

VNish’s auto-tune runs automatically on first boot, but you should configure its parameters:

• Target mode: Choose between preset performance profiles or manual target. VNish provides pre-tested profiles for each model (e.g., S17+ profiles at 55, 60, 62, 68, 74, 80, 88 TH/s).
• Power cap: Set a maximum wattage if you need to stay within circuit limits. VNish will auto-tune within this power envelope.
• Temperature limits: Set the critical température des puces (default is typically 95-100 degrees Celsius for air-cooled). VNish will throttle or shut down individual hashboards if chips exceed this threshold.

Let auto-tune run for 1–4 hours without interruption. During this period, hashrate will fluctuate as VNish tests each chip’s frequency and voltage limits. Do not adjust settings during the auto-tune process. Once complete, VNish saves the chip profile and uses it for ongoing operation.

4. Fan Control

VNish provides granular vitesse des ventilateurs control that firmware d’origine does not:

• Auto mode: VNish manages vitesse des ventilateurs based on température des puces, with configurable target temperatures. This is the recommended mode for most installations.
• Manual mode: Set a fixed vitesse des ventilateurs percentage. Useful for noise management in minage domestique setups.
• Maximum vitesse des ventilateurs limit: Cap the maximum RPM even in auto mode. Useful for noise-sensitive environments — set maximum to 60-70% for a significant réduction du bruit.
• Target température des puces: VNish’s proprietary method adjusts vitesse des ventilateurs to maintain a specific température des puces rather than just reacting to overheating. This results in significantly lower average vitesses des ventilateurs compared to firmware d’origine’s reactive approach.

5. Network & Security Settings

• Configure a static IP if your network requires it (recommended for fleet management). Naviguez vers System > Network.
• Change or disable the SSH port if you do not need remote shell access.
• Set a strong interface web password. VNish supports password changes for all equipment on the network simultaneously via the Hashcore Toolkit.

Avancé Overclocking

This is VNish’s strongest territory. No other production firmware offers the same depth of manual overclocking control. But with great power comes the very real risk of damaging hardware through excessive voltage or thermal stress. Proceed with full understanding of what you are doing.

Preset Performance Profiles

VNish ships with pre-tested overclock profiles for each supported model. These profiles have been validated by VNish’s development team and represent safe operating parameters for miners with adequate cooling:

Efficiency mode is ideal for mineurs domestiques and chaufferette operators — lower power, lower noise, better J/TH. Balanced mode matches or slightly exceeds stock performance with better efficiency. Max OC mode pushes silicon to its limits — use only with robust cooling, adequate PSU, and acceptance that hardware lifespan may be reduced.

Manual Per-Chip Frequency & Voltage Control

For miners who want to go beyond preset profiles, VNish exposes per-chip controls in the interface web. Naviguez vers Miner > Hashboards to see a detailed chip map for each hashboard.

Each chip displays:

• Chip number and position on the hashboard
• Current frequency (in MHz)
• Current voltage
• Temperature (from the nearest sensor)
• Error count — hardware errors generated by this chip
• État — active, disabled, or flagged

You can adjust frequency and voltage for individual chips or groups of chips. The process:

1. Start from the auto-tuned baseline. Let VNish’s auto-tune complete first. This gives you a stable starting profile.
2. Identify strong chips. Chips with zero hardware errors and low temperatures are candidates for frequency increases. Raise frequency by 10-25 MHz increments.
3. Identify weak chips. Chips generating hardware errors or running hot should have their frequency reduced, or be disabled entirely if they are unstable.
4. Monitor for 30+ minutes after each adjustment. Watch hardware error rates, températures des puces, and hashrate stability.
5. Iterate. Per-chip tuning is not a one-time operation — it is an ongoing optimization process. Ambient temperature changes, aging silicon, and seasonal variations all affect optimal settings.

Chip Throttling (Dead Chip Bypass)

One of VNish’s most valuable features for operators running repaired or aging hardware. When a single ASIC chip fails or becomes chronically unstable, VNish allows you to disable that specific chip while keeping the rest of the hashboard operational.

On firmware d’origine, a single failed chip often triggers hashboard shutdown — the entire board goes offline because of one bad chip out of 76+. With VNish chip throttling:

• Naviguez vers the hashboard chip map in the VNish interface web.
• Identify the failed or unstable chip (persistent high hardware errors, constant flagging by auto-tune).
• Disable the chip. VNish routes the hash chain around it.
• The hashboard continues operating at reduced capacity — typically 98-99% per disabled chip — instead of being completely offline.

VNish also automatically registers dead chips during the auto-tune process and can disable them without manual intervention. The firmware includes chip chain protection to prevent cascading failures when chips in the chain become unstable.

This feature is particularly valuable for:

• Hashboards that have been repaired — if the repair restored most but not all chips
• Aging S17/T17 hardware where individual chips are starting to fail
• Miners bought secondhand with partial chip damage
• Extending the operational life of hardware that firmware d’origine would consider non-functional

Auto-Scheduling (Time-Based Profile Switching)

VNish’s auto-scheduling feature lets you configure different performance profiles for different times of day, switching automatically based on a schedule you define:

• Night mode (off-peak rates): Run maximum overclock profile when electricity is cheapest.
• Day mode (peak rates): Switch to efficiency mode or completely pause mining when coût de l’électricités spike.
• Weekend mode: Different schedules for weekends if your utility offers weekend rate structures.

Configuration is done through the VNish interface web under Settings > Scheduler. You set the time windows, select the profile for each window (including full shutdown as an option), and VNish handles the transitions automatically. The miner ramps frequency up or down without manual intervention, and the transition between profiles takes seconds.

For canadien miners on time-of-use electricity billing (common in Ontario and Québec), this feature can make the difference between profitable and unprofitable mining. Running an S19j Pro at maximum overclock during overnight rates ($0.04/kWh) and pausing during peak rates ($0.17/kWh) dramatically changes the profitability equation.

Immersion Mining Support

VNish was one of the first custom firmwares to build dedicated immersion cooling support, and it remains the most feature-complete option for immersion operators. If you are running Antminers submerged in dielectric fluid — whether single-phase or two-phase — VNish’s immersion mode is essential.

Enabling Immersion Mode

Naviguez vers Settings > Immersion Mode (labeled as « fan rpm check » in older VNish versions) and enable it. This single toggle changes several fundamental firmware behaviors:

• Fan error monitoring is disabled. Firmware d’origine (and VNish in normal mode) expects spinning fans and throws errors or shuts down if fans are absent or stalled. Immersion mode eliminates all fan-dependent checks.
• Fan speed control is disabled. The firmware no longer attempts to ramp fans for cooling, since cooling is handled by the dielectric fluid.
• Thermal management switches to chip sensors only. In immersion mode, VNish relies exclusively on température des puces sensors for thermal protection. You configure the critical temperature threshold — typically set higher than air-cooled operation since dielectric fluid provides more uniform and effective cooling.
• Pause cooling period is adjusted. VNish fixes the prolonged cooling period issue that some firmware versions exhibited in immersion mode, ensuring faster ramp-up after pauses.

Recommended Immersion Settings

In a well-designed immersion system, températures des puces are typically 10-20°C lower than air-cooled operation at the same hashrate, enabling more aggressive overclocking profiles. This is where immersion operators extract their competitive advantage — running S21s at 250+ TH/s with stable températures des puces that would be impossible under air cooling.

Scrypt Mining with VNish

VNish is the only serious custom firmware option for Scrypt mineurs ASIC. Neither Braiins OS+ nor LuxOS supports Scrypt hardware — they are SHA-256 only. If you operate an L3+, L7, or L9, VNish is your path to performance tuning, overclocking, and efficiency optimization beyond what firmware d’origine offers.

Antminer L3+ / L3++ Optimization

The L3+ is the S9 of Scrypt mining — an older but still widely deployed machine, popular as a compact Scrypt miner and increasingly used for dual-mining Litecoin and Dogecoin via merged mining. VNish brings the L3+ back to life with features firmware d’origine never had:

• Overclocking: Stock L3+ runs at 504 MH/s. VNish can push to 650–700+ MH/s with adequate cooling and alimentation.
• Per-chip frequency tuning: Same granular control as SHA-256 models — adjust individual chip frequencies to maximize hashrate from the silicon you have.
• Efficiency mode: Undervolt for lower consommation de puissance at reduced hashrate — useful for chaufferette builds or when coûts de l’électricité are marginal.
• Custom profiles: Save and switch between profiles optimized for different operating conditions.

Antminer L7 Optimization

The L7 is the current workhorse of Scrypt mining, available in several variants from 9,050 MH/s to 9,500 MH/s. VNish adds:

• Auto-tune with thermal management: L7 miners generate significant heat, and VNish’s auto-tune takes thermal constraints into account during chip profiling.
• Overclock profiles: Push beyond stock hashrate with VNish-tested performance profiles.
• Chip throttling: Disable failed chips to keep hashboards running — critical for the L7 given the cost of replacement hashboards.
• Power scheduling: Time-based profile switching for operators on variable electricity rates.

Antminer L9 Optimization

The L9 represents the latest generation of Scrypt ASIC hardware, operating at 16–17.6 GH/s. VNish provides full feature parity with SHA-256 models: auto-tune, per-chip control, overclock profiles, immersion mode, and fleet management through ANTHILL.

Litecoin/Dogecoin Merge Mining

All Scrypt miners mine both Litecoin and Dogecoin simultaneously through merged mining — Dogecoin’s merge-mining support means your Scrypt hashrate secures both networks and earns both coins with no additional consommation de puissance. VNish does not change the merge mining mechanism — it simply makes your Scrypt hardware more efficient and powerful, which directly increases earnings from both Litecoin and Dogecoin.

When configuring pool settings for Scrypt miners, ensure your pool supports merged mining and that you have configured a Dogecoin wallet address in addition to your Litecoin address. Most major Scrypt pools (ViaBTC, F2Pool, Litecoinpool.org) handle merge mining automatically.

Surveillance et gestion

VNish provides multiple layers of monitoring and fleet management, from the single-miner tableau de bord web to enterprise-scale fleet management through ANTHILL.

VNish Web Dashboard

Every VNish-running miner exposes a tableau de bord web accessible at http://<miner_ip>/. The dashboard provides real-time information:

• Hashrate — Real-time and averaged, per-hashboard and total.
• Chip temperature map — Visual display of every chip’s temperature across all hashboards.
• Fan speed — Current RPM percentage and status.
• Power consumption — Real-time wattage draw.
• Hardware error rate — Per-chip and per-hashboard error counts.
• Pool status — Connection status, accepted/rejected shares, stale shares.
• VNish firmware version — Current build and update availability.
• Uptime — Time since last reboot.

VNish also provides built-in API access at http://<miner_ip>/docs/, which serves as a full documentation reference for programmatic access to miner data and configuration. This API can be used for custom monitoring scripts, data logging, or integration with third-party management platforms.

ANTHILL: Fleet Surveillance et gestion

ANTHILL is VNish’s free cloud-based monitoring and management platform, available to anyone running official VNish firmware. It is designed for operators managing anything from a handful of miners to large-scale data center deployments.

Key ANTHILL features:

• Centralized dashboard: View hashrate, temperature, consommation de puissance, and profitability for all VNish-running devices from a single interface.
• Individual device detail: Drill into any miner to see its model, firmware version, hashrate, temperature, vitesse des ventilateurs, and consommation de puissance.
• Alerting: Configure alerts for hashrate drops, temperature spikes, offline devices, and other critical events. Notifications can be sent via the dashboard, email, and Telegram.
• Historical data: View historical hashrate, temperature, and consommation de puissance charts for trend analysis and performance tracking.
• Fleet statistics: Aggregate view of total hashrate, total consommation de puissance, number of devices online, and overall fleet health.
• Rentabilité tracking: Calculate expected income based on current hashrate, consommation de puissance, and configurable coûts de l’électricité.

To connect your miners to ANTHILL, naviguez vers Settings > ANTHILL in the VNish interface web and enable the connection. Each miner reports its status to ANTHILL’s cloud service, and you access the dashboard through the ANTHILL web portal.

Hashcore Toolkit: Fleet Operations

In addition to firmware installation, the Hashcore Toolkit serves as a fleet management tool for ongoing operations:

• Mass configuration changes: Update pool settings, power profiles, or fan configurations across all miners simultaneously.
• Bulk mises à jour du firmware: When VNish releases a new version, deploy the update to your entire fleet from a single interface.
• Network scanning: Discover all miners on your network, regardless of firmware, for initial fleet inventory.
• Configuration cloning: Copy the configuration from one miner and apply it to others of the same model.
• Real-time monitoring: Track hashrate, temperature, and consommation de puissance with historical charts.

Hashcore Toolkit runs natively on Windows, macOS, Linux, and Android, making it accessible from virtually any device on your network.

Telegram Bot Notifications

VNish includes a Telegram bot integration for real-time mobile notifications. When configured, the bot reports:

• Miner name, model, and firmware version
• Current hashrate, temperature, vitesse des ventilateurs, and consommation de puissance
• Alerts for offline miners, hashrate drops, and temperature warnings
• Status updates on schedule or on-demand

This is particularly valuable for mineurs domestiques who want to monitor their miners remotely without running a dedicated monitoring system. Configure the Telegram integration through the VNish interface web under Settings > Notifications.

Dépannage

Problèmes courants & Solutions

Reverting to Firmware d’origine

VNish provides multiple paths back to stock Bitmain firmware:

Method 1: Remove SD Card (SD Mode Only)

1. Éteignez the miner.
2. Remove the SD card.
3. Allumez. The miner boots from its internal NAND, which still contains the original firmware d’origine.
4. You are back on firmware d’origine. No other action required.

Method 2: One-Click Revert (NAND Mode)

1. Access the VNish interface web.
2. Naviguez vers System > Backup & Restore.
3. Click Restore Factory Firmware. VNish restores the stock Bitmain firmware to NAND and reboots the miner.
4. The miner restarts running firmware d’origine.

Method 3: SD Card Recovery Flash (If Web Interface Unavailable)

1. Download the stock Bitmain firmware recovery image for your miner model from the official Bitmain support page.
2. Write the recovery image to an SD card (16GB or smaller, FAT32).
3. Insert the SD card into the powered-off miner.
4. Allumez and attendez que the green LED to indicate successful recovery. For Amlogic boards, use a USB drive with OTG adapter.
5. Remove the SD card and reboot. The miner runs firmware d’origine from NAND.

Auto-Tune Issues

• Auto-tune keeps restarting: This usually indicates a hardware issue — a marginal hashboard connection, failing chips, or inadequate alimentation. Check physical connections and ensure the PSU can deliver the required wattage for the selected profile.
• Auto-tune completes but hashrate is low: Cela signifie VNish found that many of your chips cannot sustain higher frequencies. This is a hardware quality issue — the chips on your specific machine are lower-quality silicon. Try a less aggressive profile, or accept that this machine will perform below average.
• Red domain (TIMER) errors: VNish includes automatic red domain correction for S17/T17 series. If errors persist, reduce the overclock frequency or check for ambient temperature issues.

VNish vs. Braiins OS+ vs. LuxOS vs. Firmware d’origine

Every custom firmware makes tradeoffs. Voici an honest comparison to help you choose the right firmware for your specific use case.

When to Choose VNish

• You want maximum manual control over chip frequency and voltage.
• You need to disable individual bad chips on hashboards with partial failures.
• You operate Scrypt miners (L3+, L7, L9) and want custom firmware tuning.
• You have S17/T17 miners with Amlogic cartes de contrôle (VNish is your only option).
• You run immersion cooling and need a mature, dedicated immersion mode.
• You want time-based auto-scheduling to match variable electricity rates.
• You are an experienced miner who wants the deepest possible hardware control.

When to Choose Braiins OS+ Instead

• You want simple watt-level cible de puissanceing — set a wattage and walk away.
• You care about Stratum V2 and transaction selection sovereignty.
• You prefer open-source firmware you can audit.
• You want a set-it-and-forget-it experience with minimal manual tuning.
• You mine on Braiins Pool and want tight pool integration.

Many professional opérations de minage run VNish on some machines and Braiins OS+ on others, choosing the firmware that best fits each machine’s role. VNish on immersion-cooled overclockers, Braiins OS+ on air-cooled efficiency units. Tvoici no rule that says your entire fleet must run the same firmware.

Questions fréquemment posées

Why D-Central for VNish Firmware Support

VNish gives you extraordinary control over your mining hardware — per-chip frequency tuning, dead chip bypass, immersion mode, aggressive overclock profiles. That control is powerful. It is also the kind of control that can turn a perfectly good miner into an expensive paperweight if applied without understanding the thermal, electrical, and silicon limits of the hardware.

D-Central Technologies has been flashing, configuring, and recovering miners since 2016. Our repair facility in Laval, Québec handles the full spectrum of firmware operations:

• VNish installation and configuration — We flash VNish on customer hardware and configure auto-tune, overclock profiles, and immersion mode to match your specific operating environment and goals.
• Firmware recovery — If a firmware flash goes wrong — bricked carte de contrôle, corrupted NAND, unresponsive miner — our technicians perform low-level recovery that requires specialized tools and expertise.
• Overclock optimization — We tune per-chip settings based on extensive experience with the silicon quality variations across different Antminer production batches.
• Hashboard repair — When overclocking does damage a chip, we perform chip-level hashboard repairs. ASIC chip replacement, domain repair, BGA rework — this is our specialty with 38+ model-specific repair pages on our site.
• Space heater builds — We build Chaufferette Bitcoins with custom firmware configurations optimized for quiet, efficient home operation.
• Immersion consulting — Planning an immersion cooling deployment? We advise on firmware configuration, thermal management, and hardware preparation.

Bitcoin mining runs on technology. Firmware is the software layer between your silicon and your sats. Getting it right means more hashrate, better efficiency, and longer hardware life. Getting it wrong means downtime, damaged hardware, and lost revenue. D-Central has been getting it right for thousands of miners since 2016.

Phone: 1-855-753-9997
ASIC Repair: d-central.tech/asic-repair
Chaufferette Bitcoins: d-central.tech/bitcoin-mining-heaters