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This comprehensive tutorial will guide you through the process of flashing the S19j miner using an SD card. By following these instructions, you will be able to upgrade the firmware of your miner. Ensure that you have the necessary hardware tools and software before proceeding.

Tools Needed

Before starting, make sure you have the following tools ready:

  1. Hardware: Computer (with a Windows operating system), TF card reader, and a TF card.
  2. Software: Decompression tool (such as WINRAR) and the S19j card firmware.

Steps to Antminer S19j Flashing

Step 1: Downloading and Preparing the Firmware

  1. Download the S19j card firmware from the official website using the provided download link.
  2. Unzip the downloaded firmware file by right-clicking on it and selecting “Unzip File” using a decompression tool (e.g., WINRAR).
  3. After unzipping, a folder with the same name as the zip package will appear. This folder contains the necessary files for flashing the S19j miner.

Step 2: Creating the TF Card

  1. Insert the TF card into the card reader and connect it to a USB port on your computer.
  2. Open the folder containing the unzipped firmware files from Step 1.
  3. Copy all the files from the unzipped folder and paste them into the root directory of the TF card.
  4. Once the copying is complete, verify the contents of the TF card, ensuring that the file names, sizes, and number of files are correct.

Step 3: Flashing the Miner

  1. Power off the mining machine (or separate control board).
  2. Insert the prepared TF card into the miner.
  3. Power on the mining machine (or control board).

Step 4: Monitoring the Flashing Process

  1. 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.

Step 5: Completing the Process

  1. Once the green light remains steady, the flashing process is complete.
  2. Power off the mining machine and carefully remove the TF card. Press the card inward to partially pop it out, allowing for safe removal.
  3. After removing the TF card, power on the control board and boot up the machine.
  4. 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 S19j miner using an SD card. Ensure that the miner’s firmware version matches the upgraded firmware version to confirm a successful upgrade. If you encounter any issues during the process, feel free to contact our team at D-Central Technologies Inc. We are here to provide expert assistance and support for all your mining requirements.