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This comprehensive tutorial will guide you through the process of flashing the KA3 miner using an SD card. Designed for Windows users, this tutorial provides detailed steps to upgrade your KA3 firmware. By following these instructions, you can ensure that your mining machine is running the latest firmware version.

Tools Needed

Before starting, gather the following tools:

  1. Hardware: Computer (with a Windows operating system), TF card reader, and a TF card.
  2. Software: Decompression tool (such as WINRAR) and the KA3 card firmware.

Steps to Flash Antminer KA3

Step 1: Downloading the Firmware Begin by downloading the KA3 card firmware from the provided link: [Insert hyperlink to the firmware download page]

Step 2: Creating the TF Card

  1. Unzip the downloaded firmware file by right-clicking on it and selecting “Unzip File” using your preferred decompression tool.
  2. A dialog box will appear. Click “Confirm” to proceed with the unzipping process.
  3. Once unzipped, you will see a folder with the same name as the zip package. This folder contains the necessary files for flashing the KA3 miner.
  4. Inserting and Formatting the TF Card
  5. Insert the TF card into the card reader and connect it to a USB port on your computer.
  6. Your computer will recognize the new device and assign it a disk letter (e.g., E). Take note of this disk letter.
  7. Right-click on the corresponding disk (e.g., E disk) and select “Format” to format the TF card.
  8. In the formatting dialog box, choose FAT32 as the file system from the drop-down menu. Click “Start” to initiate the formatting process.
    • Important: Formatting will erase all data on the TF card. Backup any important data before proceeding.
  9. Copying Files to the TF Card
  10. Open the folder containing the unzipped files from Step 2.
  11. Select all the files inside the folder and copy them.
  12. Paste the copied files into the root directory of the TF card.
  13. Verifying TF Card Contents Before proceeding with the flashing process, verify that the TF card contains the correct files. Confirm the file names, sizes, and number of files.
  14. Flashing the KA3 Miner
  15. Power off the mining machine or separate control board.
  16. Insert the prepared TF card into the miner.
  17. Power on the mining machine or control board.
  18. Monitoring the Flashing Process
  19. After powering on, observe the indicator lights on the miner.
    • The double-light network port light should remain steady for approximately 3-5 seconds.
    • The double light will turn off for about 10 seconds.
    • Finally, the green light will remain steady.
    • Refer to the provided images for visual representations of the different flashing statuses.
  20. Completing the Process
  21. When the green light remains steady, the flashing process is complete.
  22. Power off the mining machine and carefully remove the TF card. Press the card inward to partially pop it out, allowing for safe removal.
  23. After removing the TF card, power on the control board and boot up the machine.
  24. Log in to the miner’s background interface to verify if the current firmware version matches the card-swiped firmware.


By following this comprehensive tutorial, you have successfully flashed your KA3 miner using an SD card. Ensure that your mining machine is now running the updated firmware version. If you encounter any issues during the process, please don’t hesitate to reach out to our team at D-Central Technologies Inc. We are here to provide expert assistance and support for all your mining needs.