Antminer L7 Vnish Firmware

How to install

NAND INSTALLATION: Download the NAND image and the Hashcore Toolkit utility (extract the archive and read the installation guide).

SD INSTALLATION: Download the SD image, extract it, and read the installation guide (To install the firmware, use an SD card no larger than 16 GB, FAT32). Insert the SD card with the Vnish image and power on the miner — if you remove the SD card, the BITMAIN firmware will be restored. If you need to update the version of the Vnish firmware already installed on the SD card or in NAND, download the WEB version of the Vnish firmware and upload it using the UPGRADE function.

VNISH FIRMWARE UPDATE: Download the Vnish Online Updater (VOU) to quickly update your firmware to the latest version without downloading any additional files.

Select Vnish firmware

Model
Antminer L7
Version
1.2.6
1.2.7
Type
XIL
Method
NAND
SD

Vnish firmware for Bitmain
( - ,)

Modes antminer L7 firmware

POPULAR MODES VNISH FIRMWARE L7

STOCK BITMAIN FIRMWARE L7
9050 TH/s – 3260 watt (0,36 watt – Mh/s)

Main Advantages After Installing Vnish L7 Firmware

Vnish L7 firmware advantages

Up to 20% Hashrate Increase

Vnish delivers up to a 20% hashrate boost thanks to its intelligent auto-tuning system. The firmware interacts with each individual element of the hash board, analyzes chip characteristics, and selects optimal voltage and frequency settings. This personalized approach increases performance without compromising stability.

Ready-made overclocking profiles are also available and can be selected depending on current needs. When maximum computing power is required, simply activate the appropriate mode — and the miner will switch to a high-performance hashrate mode. This is especially beneficial during periods of rising BTC prices, when every additional terahash directly impacts profitability.

Chip Auto-Tuning

Even within a single hash board, chips may differ in performance characteristics: some operate stably at higher frequencies, while others perform best at medium levels. Stock firmware applies identical parameters to all chips, reducing overall efficiency.

Vnish analyzes each chip individually and assigns optimal parameters. This allows you to:

  • Increase total hashrate;
  • Reduce power consumption;
  • Prevent overheating of individual modules.

The auto-tuning system runs in the background and continuously adjusts parameters to maintain maximum performance.

Security System

The firmware includes multi-level protection mechanisms that ensure stable miner operation under various conditions. If temperatures exceed safe limits, the device automatically shuts down, preventing overheating and potential damage to chips or power supply units.

Protection against incorrect voltage is also implemented: if values exceed safe thresholds, the system blocks operation and notifies the user of the issue. This allows safe testing of overclocking profiles — all critical scenarios are monitored and controlled by the firmware.

Temperature Management

Overheating is one of the primary causes of ASIC hardware failure. High temperatures accelerate chip degradation and negatively affect power boards and cooling fans.

Vnish provides flexible cooling control: you can adjust fan speeds and set temperature thresholds. This helps achieve an optimal balance between cooling efficiency, noise level, and energy consumption.

In colder regions, fans can be set to minimum speed to reduce electricity usage, while in hot climates the system automatically increases cooling intensity. As a result, equipment operates more reliably and has a longer lifespan.

Energy Optimization After Installing Vnish L7 Firmware

A key efficiency metric in mining is the ratio of power consumption to performance (W/TH). Even a slight reduction in this value can lead to significant savings at scale.

Vnish enables voltage regulation, load balancing, and optimization of W/TH performance. In regions with high electricity tariffs, this becomes especially important.

For example, if a standard mode delivers 30 W/TH and an optimized mode delivers 25 W/TH, the annual cost difference can reach tens of thousands of dollars even for a single mining farm.

Error Reduction After Installing Vnish L7 Firmware

ASIC devices are complex systems where every component affects operational stability. Failures may occur due to voltage spikes, overheating, improper cable connections, or contamination within the cooling system.

The firmware enables early problem detection. If one of the chips begins to operate unstably, the system automatically lowers its frequency, preventing the entire board from shutting down.

The built-in logging system provides full access to information about events and errors, allowing users to quickly determine whether technical intervention is required or if a software adjustment is sufficient. This significantly reduces the risk of damage to expensive components.

Vnish Firmware Versions

Version 1.2.7

🆕 New Antminer models

  • S19 XP+
  • S19 XP+ Hydro
  • U3S19XPH
  • S21e Hydro
  • U3S21EXPH

🆕 Extended submodel support

  • S19 XP — BHB56806
  • S19j XP — BHB56804-
  • S19k Pro — BHB56907
  • S21+ Hydro — H6HB70702, H6HB70704
  • S21+ — A3HB70702, A3HB70703
  • S21 Pro — A3HB70603
  • S21 XP — A3HB70502, A3HB70503


Version 1.2.6

🆕 Extended miner support

  • New supported Antminer models:
  • T19 Pro Hydro, S19j XP, S19e XP Hydro, S19 Pro Hydro (120 chips)
  • S21 XP, S21+, S21+ Hydro, S21 Immersion, S21 Pro,
  • S21 XP Hydro, S21 XP Immersion, T21 with Xilinx and L9
  • Added Antminer submodel support for:
  • S19 XP: BHB56802
  • S21 Hydro: HHB68601, HHB68502, HHB68503
  • T21: BHB68701-
  • S21: BHB68606, BHB68603P, BHB68603-

⚙️ New features and improvements

  • Added the ability to edit configured presets
  • Chinese language is now available in the dashboard
  • New detailed power consumption chart
  • Displays miner and hashboard power consumption from presets (for models without a built-in wattmeter in the power supply)
  • Water temperature widget for Antminer S19 Pro Hydro and S19 Pro Plus Hydro (inlet/outlet)
  • Miner initialization: fast pause during initialization
  • Power supply temperature monitoring support
  • Automatic preset reconfiguration after repeated “Chain break detected” errors
  • Comprehensive error system with detailed error codes
  • Updated voltage limits for Antminer T21
  • Automatic shutdown on any chain error for models without PIC controllers
  • Charts are now saved after reboot
  • Fixed unexpected miner crash

🔧 New configuration options

  • Preset switching options:
  • Ignore fan speed and automatic upper preset downgrade based on temperature
  • Chip regulation: available for x21 series (except S21 Pro)
  • Sensor handling:
  • Ability to ignore chip temperature sensors (Antminer L9, Antminer S21, Antminer T21, Antminer S21 Imm, Antminer S21 Hydro)
  • Ability to skip broken temperature sensors
  • Startup control:
  • Configurable delay before mining starts (reduces power spikes at startup)
  • Configurable minimum number of working hashboards required to start mining

🔧 Bug fixes

  • Fixed random EEPROM corruption
  • Fixed pool configuration loss during abrupt power-off
  • Fixed dashboard freeze caused by error handling
  • Fixed unexpected reset of immersion mode to automatic

⚠️ Removed features

  • Hotel Pool and Fees tabs removed

🌡 Preset and temperature control improvements

  • Updated preset switch thresholds: RISE at 85 °C and DECREASE at 90 °C
  • Added new presets for: Antminer S19j Pro+, S19a, S19 XP, S21
  • Fixed presets for: Antminer S19e XP Hydro, S19 (76 chips), S19j Pro, S19 Pro+ Hydro, L7 and S19i

🌬 Fan and cooling improvements

  • Added maximum fan speed limit for automatic mode
  • Reduced minimum fan speed during pause to 0%
  • Increased maximum fan speed to 90% when increasing presets
  • Improved fan control logic based on temperature

⚙️ System configuration and behavior

  • Restart configurations: maximum restart attempts are now disabled by default (0)
  • Time zone:
  • Added time zone handling for Cvitek
  • Full reboot is now required when changing the time zone
  • EEPROM reading: accelerated on all boards except XIL
  • Default support: for miners without EEPROM, a default board model is assigned
  • Logging:
  • Logs are not preserved after reboot on Cvitek boards
  • Chip ID is displayed in logs during overheat events

🌍 User experience (UX) and interface improvements

  • The dashboard now automatically detects the system/browser language on first launch
  • Various UI and UX improvements to enhance usability