How to perform a factory reset on an Antminer?

Understanding the Need for a Factory Reset on an Antminer

Performing a factory reset on an Antminer is often necessary when troubleshooting persistent issues, preparing the device for resale, or changing mining pools. The factory reset process essentially reverts the miner’s firmware and settings back to their original state as they were when the unit was first shipped from the manufacturer. This means all custom configurations, such as network settings, pool information, and static IP assignments, will be erased.

Before initiating a factory reset, it's important to understand that this operation will not only erase user-defined settings but also disconnect the miner from any ongoing mining activities. Therefore, users should ensure that any critical data or logs are backed up prior to proceeding.

Identifying Your Antminer Model

Different Antminer models, such as the S9, S17, T19, or L7, may have slightly different procedures for performing a factory reset. It is crucial to identify your specific model before proceeding, as the steps involved can vary depending on hardware design and firmware version.

• Locate the model number on the physical unit, typically found on a sticker at the back or bottom.
• Alternatively, access the web interface of the miner through its IP address in a browser and check the system information section.

Knowing the exact model ensures that you follow the correct procedure and use the appropriate tools for resetting the device without causing unintended damage.

Using the Physical Button Method

For many Bitmain Antminer devices, especially older and mid-range models like the S9, the most common method of performing a factory reset involves using the physical reset button located on the control board.

• Locate the small reset button, usually recessed and labeled “Reset” or “RST.”
• Use a small tool such as a paperclip or pin to press and hold the button.
• Hold the button for approximately 15 seconds while the miner is powered on.
• After releasing the button, the miner will reboot and restore default settings.

This method does not require any software tools and is particularly useful if the miner is unresponsive via the web interface or SSH.

Factory Reset via Web Interface

If your Antminer is accessible through its web-based configuration panel, you can perform a factory reset directly from the UI. This method is ideal for miners that are functioning normally and connected to your local network.

• Open a web browser and enter the IP address assigned to your Antminer.
• Log in using your admin credentials (default username/password is usually root/root unless changed).
• Navigate to the “System” or “Maintenance” section in the menu.
• Look for an option labeled “Restore Factory Settings” or similar.
• Confirm the action when prompted.

The miner will then restart and revert to its original configuration. Once completed, it will typically obtain a new IP address via DHCP, so you may need to locate it again on your network.

Utilizing SSH Commands for Advanced Users

For more experienced users familiar with command-line operations, resetting an Antminer can also be done via SSH. This method offers greater flexibility and is particularly useful when dealing with remote miners or units integrated into larger mining farms.

• Ensure SSH access is enabled on the miner.
• Connect to the miner using an SSH client (such as PuTTY on Windows or Terminal on macOS/Linux).
• Enter the login credentials (root by default).
• Execute the following command:

/sbin/msh_factory_reset.sh

• Wait for the script to complete execution.
• Reboot the miner manually or allow it to restart automatically.

This method is especially valuable for bulk resets or scripting automation across multiple miners in large-scale operations.

Post-Reset Configuration Steps

After performing a factory reset, your Antminer will no longer retain any previous configurations. You will need to go through the initial setup process once again.

• Reconnect the miner to your network.
• Access the web interface using the default IP address or discover the new IP via your router’s DHCP client list.
• Reconfigure your preferred mining pool settings, including URL, port, worker name, and password.
• Set up network parameters, such as static IP, DNS, and gateway, if needed.
• Adjust fan settings, overclocking profiles, or other advanced options according to your preferences.

It’s also recommended to update the firmware to the latest stable version after a reset to ensure optimal performance and security.

Frequently Asked Questions (FAQ)

Q: Will a factory reset erase the firmware on my Antminer?A: No, a factory reset will not remove or erase the firmware itself. It only clears user-configured settings and restores defaults. The core firmware remains intact.

Q: Can I recover my previous settings after a factory reset?A: No, once a factory reset is performed, all previous configurations are permanently deleted. There is no built-in recovery mechanism for restoring those settings unless you had previously exported them.

Q: Is there a way to factory reset an Antminer remotely?A: Yes, if you have SSH access or can reach the web interface remotely, you can initiate a factory reset without being physically present near the miner.

Q: How long does a factory reset take on an Antminer?A: The actual reset process typically takes between 1 to 2 minutes, depending on the model and current system load. However, the time required to reconfigure the miner afterward may vary based on user preferences and complexity.