ANSWER

Where can I download VNISH firmware for Antminer?

Find the download for your Antminer

Start with the VNISH firmware catalog. Select the full model name and control board. For common models, open the dedicated pages for Antminer S19 or Antminer S21. Variants such as S19j Pro, S21 Pro and S21 XP have their own catalog entries.

Which firmware version should I download?

The current version depends on the model and board. For example, the Antminer S21 AML NAND route currently lists VNISH 1.3.6. Check the version and exact file name on your model's page rather than choosing a file by release number alone.

From the download page to installation

• Confirm the full model and control-board platform. If the board is unknown, use the control-board guide before choosing a file.
• Open the matching installation guide. It links to the firmware package and explains which existing firmware the route supports.
• Download the firmware archive without renaming or unpacking it. HashCore Toolkit is the installation tool; it does not replace the firmware file.
• Follow the guide for one miner on your local network before repeating the operation on other devices.

Check the source of your download

Use the file linked from the exact model and board route. The published file name, size and SHA-256 let you check that your download matches that catalog entry. A matching checksum confirms file correspondence; the installation guide determines whether the route applies to your device.

What it costs

The build is FREE OF CHARGE to download and to test. No licence key, no trial timer. A small share of active hashrate applies only while the firmware is actually running - no installation fee, no penalty if you stop - and it stays visible in the dashboard. On a well-matched ASIC the gains normally outweigh it several times over.

Where to go next