How to install
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ATTENTION: If you have BITMAIN firmware from March 2024 and later, you need to use this instruction to install VNISH firmware.
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
Select Vnish firmware
Vnish firmware for Bitmain
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VNISH TOOLKIT FOR 21 SERIESModes antminer S21, T21 firmware
VNISH FIRMWARE MODES FOR ALL 21 SERIES MODELS
STOCK BITMAIN FIRMWARE: 188 TH/s – 3500 watt (18 watt – TH/s)
2060 watt ~ 119 TH
2180 watt ~ 125 TH
2290 watt ~ 131 TH
2390 watt ~ 137 TH
2500 watt ~ 144 TH
2600 watt ~ 150 TH
2730 watt ~ 156 TH
2830 watt ~ 162 TH
2940 watt ~ 169 TH
3040 watt ~ 175 TH
3150 watt ~ 181 TH
3270 watt ~ 187 TH
3370 watt ~ 193 TH
3480 watt ~ 200 TH
3580 watt ~ 206 TH
3690 watt ~ 212 TH
3810 watt ~ 218 TH
3920 watt ~ 224 TH
4020 watt ~ 231 TH
4130 watt ~ 237 TH
4230 watt ~ 243 TH
1960 watt ~ 113 TH
2060 watt ~ 119 TH
2180 watt ~ 125 TH
2290 watt ~ 131 TH
2390 watt ~ 137 TH
2500 watt ~ 144 TH
2600 watt ~ 150 TH
2730 watt ~ 156 TH
2830 watt ~ 162 TH
2940 watt ~ 169 TH
3040 watt ~ 175 TH
3150 watt ~ 181 TH
3270 watt ~ 187 TH
3370 watt ~ 193 TH
3480 watt ~ 200 TH
3750 watt ~ 206 TH
3870 watt ~ 212 TH
4100 watt ~ 218 TH
4320 watt ~ 224 TH
4480 watt ~ 231 TH
4630 watt ~ 237 TH
4750 watt ~ 243 TH
4900 watt ~ 249 TH
5030 watt ~ 255 TH
5170 watt ~ 262 TH
5300 watt ~ 268 TH
5430 watt ~ 274 TH
5610 watt ~ 280 TH
Version 1.2.6 Stable
🆕 Expanded Miner Support
• Newly Antminer supported 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
• Antminer submodel support added for:
• S19 XP: BHB56802
• S21 Hydro: HHB68601, HHB68502, HHB68503
• T21: BHB68701-
• S21: BHB68606, BHB68603P, BHB68603-
⚙️ New Features & Enhancements
• Added ability to edit tuned presets
• Chinese language now available in dashboard
• New detailed graph for power consumption
• Shows miner consumption and hashboards from presets (for models without PSU consumption reporting)
• Water temperature widget for Antminer S19 Pro Hydro and S19 Pro Plus Hydro (inlet/outlet)
• Miner Initialization: Quick pause during initialization
• PSU temperature monitoring support
• Automatic preset retuning 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 now persist after reboot
• Resolved unexpected miner crash
🔧 New Configuration Options
• Preset Switcher options:
• Ignore fan speed and Auto-lower top preset based on temperature
• Chip Throttling: Available for x21 series (excluding S21 Pro)
• Sensor Handling:
• Option to ignore chip temperature sensors (Antminer L9, Antminer S21, Antminer T21, Antminer S21 Imm, Antminer S21 Hydro)
• Option to skip broken temperature sensors
• Startup Control:
• Configurable delay before mining starts (reduces startup power spikes)
• Configurable minimum number of operational boards required to start mining
🔧 Bug Fixes
• Fixed occasional EEPROM corruption
• Fixed issue with pool configuration loss on abrupt shutdown
• Fixed dashboard freezing caused by error handling
• Fixed immersion mode unexpectedly resetting to auto
⚠️ Deprecated Features
• Removed Hotel Pool and Fees tab
🌡 Preset & Temperature Control Improvements
• Preset Switcher thresholds updated: RISE at 85 °C and DECREASE at 90 °C
• New presets added for: Antminer S19j Pro+, S19a, S19 XP, S21
• Corrected presets for: Antminer S19e XP Hydro, S19 (76 chips), S19j Pro, S19 Pro+ Hydro, L7 and S19i
🌬 Fan & Cooling Enhancements
• Added maximum fan speed limit for auto mode
• Reduced minimum fan speed during pause to 0%
• Increased maximum fan speed to 90% during preset increase
• Improved fan control logic based on temperature
⚙️ Configuration & System Behavior
• Restart Configs: Max Restart Attempts now defaults to disabled (0)
• TimeZone:
• Added time zone handling for Cvitek
• Full reboot now required when changing time zone
• EEPROM Reading: Accelerated on all boards except XIL
• Default Support: Default board_model assigned for miners without EEPROM
• Logging:
• Logs not saved after reboot on Cvitek boards
• Chip ID shown in logs during overheat events
🌍 User Experience (UX) & UI Improvements
• Dashboard now auto-detects system/browser language at first launch
• Various UI and UX enhancements for improved usability
🔐 Stability, Performance & Security
• Improved autoswitcher and autotune performance
• General system stability improvements
• Strengthened firmware security
• Improved PSU compatibility across supported models
• Added brute-force protection for web interface passwords
💻 API Changes
• Factory Info Enhancements: Added has_pics, psu_model, and psu_serial to response
• New API Fields:
• summary: includes hr_nominal (theoretical hashrate)
• info: includes build_uuid, build_name
• metrics: includes power_consumption
• chips: includes throttled field