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Troubleshooting “No Hardware Version Found” or “BMMiner” Error for S9 & T9 Series Miners

Start with safety and logs

Power down before opening a miner, label cables before moving boards, and capture logs before repeated reboots erase useful evidence. Record model, firmware, pool, uptime, fan speed, temperature, reject rate, chain count, and the exact error text.

Confirm the fault class

Separate configuration faults from hardware faults first. Pool errors, DNS failures, bad worker names, overheating, weak power, fan faults, and missing hashboards can look similar from the dashboard but require different fixes.

Document the test path

Change one variable at a time and keep the before/after result. Note cable swaps, PSU swaps, firmware changes, pool changes, fan replacements, ambient temperature, and whether the fault follows a hashboard, control board, network, or power source.

When to escalate

Escalate to professional repair when there is a burned smell, melted connector, breaker trip, corrosion, repeated hashboard loss, liquid exposure, or a board-level fault that returns after a basic cable, power, firmware, and airflow check.

After the fix

Run the miner long enough to confirm stable accepted hashrate, fan behavior, chip temperature, reject rate, and pool-side reporting. A dashboard that looks normal for five minutes is not enough evidence for a recurring power, heat, or hashboard fault.

· D-Central Technologies · ⏱ 2 min read

Last updated:

This troubleshooting guide applies to all auto frequency S9 and T9 series ANTMINERs.

If the miner overview screen does not display a hardware version or BMMiner version, this indicates the mining program has not started yet. The error might appear in your miner’s kernel log as “bmminer not found, restart bmminer”.

If you encounter this issue, follow these troubleshooting steps:

  1. Reload the Firmware: Download and install the latest firmware from our official website. Run the miner for at least 20 minutes after reloading the firmware.

    Links: [Download Firmware] | [How to Reload Firmware]

  2. Check Your Mining Pool Settings: Ensure there are no errors, including spelling mistakes or spaces, in the pool URLs on the Miner Configuration tab. Also, verify your miner’s connection with the mining pools as issues with these connections can cause the error.
  3. Check Network Stability: Confirm your internet and network connections are stable. Network configurations or router settings could be causing the error. Use the Ping button under “Network” and then “Diagnostic” to verify your miner can receive data.
  4. Check Fan Voltage: Compare the voltage of the front and rear fans. If the front fan’s voltage is lower, swap the positions of the fans. Also, check the kernel log for the message “Fatal Error: some Fan lost or Fan speed low”. This message indicates an issue with the fans. Replace them if necessary.

    Links: [Repair My Fan] | [Buy a New Fan]

  5. Reset the Miner:

    Link: [How to Reset the Miner]

  6. Check the Control Board: Disconnect all hash boards from both the power supply unit and the control board. Reboot the miner with only the control board connected. If the error message still appears, the control board may need to be replaced.

    Links: [Repair My Control Board] | [Buy a New Control Board]

  7. Create a Repair Ticket: If none of the above steps resolves the problem, create a repair ticket and return the whole miner to us for repair.

    Links: [How to Create a Repair Ticket] | [Repair Guide] | [Repair FAQs]

Should you have any inquiries, feel free to contact us for assistance.

D-Central Technologies

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D-Central Technologies is a Canadian Bitcoin mining company making institutional-grade mining technology accessible to home miners. 2,500+ miners repaired, 350+ products shipped from Canada.

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Editorial review and limitations

Reviewed by D-Central's mining hardware and ASIC repair editorial team for practical accuracy, buyer risk, repair context, and operational assumptions. Verify current hardware price, stock, network difficulty, BTC price, power rate, shipping, tax, firmware, and device condition before buying, hosting, repairing, or retiring mining hardware.

Last reviewed May 24, 2026. D-Central, Laval, Quebec.

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Last reviewed May 25, 2026. Added to route educational and product traffic toward exact commercial next steps.