Bitmain Troubleshooting Guide
121 error codes and fixes for Bitmain ASIC miners.
Antminer S21 – Control Board Not Booting
Antminer S21
Antminer S9 – Control Board Not Booting
Antminer S9
Antminer – Control Board Beeping
All Antminer models with buzzer
Antminer S19 – eMMC Failure
Antminer S19 series, S21 series (eMMC-based)
Antminer – SD Card Corruption
Antminer models using SD-based firmware (S9, L3+)
Antminer – LED Blinking Red/Green
All Antminer models
Antminer – LED Indicator Red Solid
All Antminer models
Antminer S19 – Control Board Not Booting
Antminer S19, S19 Pro, S19j Pro, S19 XP
Antminer S19 – Filesystem Full Error
Antminer S19
Antminer – BHB42 BMMiner Version Mismatch
Antminer
ASIC Miner – Wrong Firmware Version Flashed
ASIC Miner
Antminer – Factory Reset Procedure
Antminer
Antminer S19 – SD Card Firmware Flash Not Working
Antminer S19
Antminer – Autotune Firmware Crash
Antminer
Antminer – Custom Firmware Bricked Control Board
Antminer
Antminer S21 – Firmware Compatibility Error
Antminer S21
Antminer S19 – Kernel Log Errors
Antminer S19
Antminer S9 – Firmware Downgrade Issues
Antminer S9
Antminer – SSH Connection Refused
All Antminer models
Antminer – Web Interface Not Loading
All Antminer models
Antminer – CGMiner / BMMiner Crash
All Antminer models
Antminer – Firmware Corrupted / Bricked
All Antminer models
Antminer S19 – Firmware Update Failed
Antminer S19, S19 Pro, S19j Pro, S19 XP, S21
ASIC Miner – VPN Interfering with Pool Connection
ASIC Miner
ASIC Miner – Ethernet Port Hardware Failure
ASIC Miner
Antminer – SSH Connection Refused (Network)
Antminer
ASIC Miner – Web Interface Not Loading
ASIC Miner
ASIC Miner – Frequent Pool Disconnections
ASIC Miner
Antminer – Stratum V2 Connection Issue
Antminer
Antminer S19 – High Rejected Share Rate
Antminer S19
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