Vnish S21, T21 firmware

How to install

ATTENTION: If you have BITMAIN firmware from March 2024 and later, you need to use this instruction to install VNISH firmware.

There are several options for installing the antminer S21, T21 vnish firmware. The first option is to install using SD card, the second option is to install without an SD card directly to NAND of the miner using the VNISH TOOLKIT FOR 21 SERIES

NAND INSTALL: Download NAND INSTALL IMAGE and VNISH TOOLKIT FOR 21 SERIES ( unzip, read manual how to install).

SD INSTALL: Download the SD IMAGE , unzip and read manual ( Use SD card to install the firmware (not more than 16gb, FAT 32) Insert the SD card with VNISH FIRMWARE and turn on the asic, if you pull out the SD card the BITMAIN firmware will return. If you need to update the version of vnish firmware which you are already using on the SD card or in NAND you need to download the firmware WEB SD update file and use upgrade function in the firmware.

After rebooting the miner with the CVitek control board with the vnish firmware, the stock firmware will return, you need to scan the network where the miner is located using phoenix-scanner in the background and the Vnish firmware will be restored automatically

VNISH TOOLKIT FOR 21 SERIES

Modes antminer S21, T21 firmware

VNISH FIRMWARE MODES FOR ALL 21 SERIES MODELS

STOCK BITMAIN FIRMWARE: 188 TH/s – 3500 watt (18 watt – TH/s)

Version 1.2.6 Rc2

📣 New Features:

• Patented Chip Throttling now included Hashrate compensation utilizing cooler chips to keep high performance!
• Added Chinese language support
• NEW: Consumption graph added for detailed monitoring
• Markings added on chips with frequency adjustments due to throttling (x21 series)
• Support added for Antminer S21XP Hydro and S21 XP Immersion
• Fan speed now can be ignored in auto mode when raising presets

⚡️ Improvements:

• Default voltage decreased for Antminer S19 XP
• Corrected presets for Antminer S19e XP Hydro
• Updated presets for Antminer L7 and S19i models
• Fixed occasional EEPROM corruption issue
• Fixed immersion mode reset to auto
• Accelerated reading of EEPROM’s on all control boards except XIL
• Improved performance of autoswitcher and autotune features
• Enhanced miner stability
• Various UI/UX fixes

⚙️ Bug Fixes:

• Resolved issue preventing firmware start after CV update
• Fixed display of active pools in the old API (4028)
• Corrected programmatic disconnection of boards
• Adjusted cooldown timing in Hydro and Immersion modes to prevent extended cooling periods (2min)
• Fixed voltage return issue during adjustment
• Corrected sensor reading errors on S21 Pro and XIL models

💻 API Changes:

• Added ‘hr_nominal’ to the ‘summary’ field for miner theoretical hashrate
• New fields ‘build_uuid’ and ‘build_name’ added to ‘info’ requests
• New field ‘power_consumption’ metric added to ‘metrics’ requests
• New field ‘throttled’ added to’chips’ requests

Version 1.2.6 Alpha5

📢 New Features:

• Chip Throttling: Now available for the x21 series (excluding S21 Pro).
• Expanded Miner Support:
• Antminer T19 Pro Hydro
• Antminer S21 XP
• Antminer S19j XP
• Antminer S19e XP Hydro
• New Settings:
• Preset switcher: Ignore fan speed and Auto lowering top preset options added.
• PSU Update: Added PSU model name for 0x64.
• Pool Updates: Default pools updated for Antminer L7.

🚦 Improvements:

• Autotune Efficiency: Autotune algorithm is now more effective.
• Deprecated Features:
• Removed Hotel Pool.
• Removed the “Fees” tab.
• Restart Configs: The max_restarts field now defaults to disabled (set to 0).
• Additional Presets: New presets available for Antminer S19j Pro+ and Antminer S21.

🐞 Bug Fixes:

• Antminer S21 Pro Sensor: Fixed sensor reading issues for S21 Pro.
• Immersion Mode: Fixed prolonged cooling periods in immersion mode.
• Voltage Configs: Corrected default voltage settings for Antminer S19-88 and S19-126.

💻 API Changes:

API Response: Now only includes active chains. Disabled/disconnected chains will be excluded from the API response.