Vnish Firmware 1.3.4 & Hashcore Toolkit 1.7.3 Released

2026-07-14
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Introduction: Powerful Updates for Modern Mining Fleets

The mining community has received two highly anticipated releases from Vnish: Vnish Firmware version 1.3.4 and Hashcore Toolkit RELEASE 1.7.3. These updates deliver expanded hardware support, smarter automation, enhanced stability, and critical fixes that make managing large-scale ASIC operations more efficient than ever.

Whether you’re running Antminer S21 series, S19 models, L9 units, or the latest T21 Hydro miners, these releases bring meaningful improvements in performance, thermal management, and fleet-wide control. The reworked presets and new auto-detection capabilities ensure your miners operate at peak efficiency with minimal manual intervention.

💾 Expanded Hardware

Official support for Antminer S21 Pro+ and U3S21EXPH (H1HB70604) plus improved detection across S19/T19 series.

🛡️ Smarter Protection

New optional Power Limit and automatic PSU thermal protection that reacts instantly to high temperatures.

⚡ Fleet Automation

Hashcore now automatically restarts devices when Throttling settings change — no manual reboots required.

Vnish Firmware 1.3.4

Vnish Firmware 1.3.4 is a substantial update focused on broader compatibility, intelligent power management, and rock-solid stability across the most popular Antminer models in 2026. Miners running large fleets will appreciate the improved auto-detection and reworked presets that deliver better hashrate consistency and thermal performance out of the box.

Expanded Support

Added official support for Antminer S21 Pro+ — now fully compatible with all advanced tuning and monitoring features.
Added support for Antminer U3S21EXPH (H1HB70604) — specific sub-model now recognized and optimized.
Improved hardware auto-detection for multiple Antminer S19 and T19 series models — faster onboarding and fewer configuration errors.

Key Improvements

Power Limit is now optional and can be enabled directly from the Advanced settings — giving operators full flexibility without forcing restrictions.
New PSU thermal protection automatically reacts to high power supply temperatures — protecting your hardware from thermal stress and potential failures.
Enhanced Preset Switcher stability with improved fallback logic — smoother transitions and fewer unexpected behavior changes during operation.

Optimization Updates

Fixed autotuning issues across several chip architectures — more reliable tuning results on a wider range of hardware.
Improved hashboard domain rebalancing for more stable performance — better distribution of workload across hashboards.
Multiple configuration and voltage validation fixes — reduced chance of misconfiguration during setup or updates.

⚠️ Important Notice: Presets Have Been Completely Reworked

For optimal performance after upgrading to Vnish 1.3.4, users must perform a full retune on the following models:

L9, S19 XP+, S21, T21, S21 Hydro, S21+, S21 Pro, S21 XP

This ensures you benefit from the latest optimizations and stability improvements.

Download Vnish Firmware 1.3.4

Hashcore Toolkit RELEASE 1.7.3

Hashcore Toolkit 1.7.3 delivers powerful quality-of-life improvements and new device support that make day-to-day fleet management significantly smoother. The standout feature is intelligent automation around Throttling settings — the application now automatically restarts devices when changes require it, eliminating manual reboots.

Smart Settings Management

🔄 Automatic Device Restart

When changing Throttling settings, the application automatically restarts the device if necessary — no need to manually reboot.

📊 Throttling Value Display

New column displaying the current throttling value for quick visibility across your entire fleet.

New Features

Monitoring: Column with throttling value display. Monitor real-time throttling status across all devices at a glance.
Device Management: Automatic device restart on Throttling changes. Save operator time on large-scale mining operations.
Device Support: Newly supported models include Antminer U2L9H and Antminer S21++.

Improvements

Firmware: Updated Luxor firmware detection algorithm and revised device detection when installing firmware with limited cgi-bin access.
Settings Cloning: Changed default values for global frequency and voltage for safer cloning workflows.

Bug Fixes

Fixed error occurring when recovering CV firmware if Hashcore firmware is not installed.
Fixed firmware installation support for Antminer S21+ Hydro (CV).
Removed ability to override device model during firmware installation/update.
Fixed icon change when changing column order.
Stabilized application startup on incorrectly saved or incompatible data.
Fixed missing VC Redist files in Windows build.

Download Hashcore Toolkit 1.7.3

How to Update to Vnish 1.3.4 & Hashcore 1.7.3

Update Hashcore Toolkit first — Download and install the latest 1.7.3 version using the links above. This ensures full compatibility.
Scan your network — Create or open your device group in Hashcore and scan your IP range to discover all miners.
Download Vnish 1.3.4 firmware — Get the files from vnish.us. Place the files in a dedicated folder (do not unzip).
Install — Select miners → Commands → Install Firmware. Choose the folder containing the firmware, set Firmware Name to vnishus and Version to 1.3.4.
Retune — After installation, especially on L9, S19 XP+, S21, T21, and Hydro models, perform a full preset retune.

Why These Updates Matter for Your Mining Operation

Higher Uptime & Stability: Automatic restarts, improved fallback logic, and PSU protection reduce unexpected downtime.
Better Efficiency on Popular Models: Reworked presets for S21 series and L9 deliver more consistent hashrate.
Faster Fleet Management: Hashcore 1.7.3’s automation and new device support let you scale operations without extra manual work.
Future-Proof Compatibility: Official S21 Pro+ support and improved auto-detection mean your newest hardware is fully supported today.