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Spark Firmware Update Troubleshooting

Quick Troubleshooting Checklist

Before using the alternative firmware updater below, try these quick fixes first:

  1. Run the updater as administrator (Windows: right-click → Run as administrator).
  2. Unplug and reconnect the USB cable if your computer does not detect Spark 40.
  3. Connect directly to your computer's USB port — avoid using a USB hub.
  4. Unplug other USB devices to prevent potential conflicts.
  5. Try another USB port on your computer.
  6. Try another computer if the update continues to fail.
We recommend performing a Factory Reset after a firmware update if your Spark shows unexpected behavior (e.g., no sound, connectivity issues).

FAQ

Q: My computer does not detect Spark 40.
A: Please try another USB port and avoid using a USB hub.
For Mac users, please try resetting PRAM/NVRAM:
How to Reset PRAM or NVRAM
Q: After the firmware update, Spark 40 cannot be connected via Bluetooth.
A: Navigate to the Bluetooth settings of your device, unpair or forget the previous connection with Spark 40 Audio, and then open the Spark app to connect Tone Control before connecting Spark 40 Audio.

Alternative Firmware Updater

If you encounter any of these problems after a firmware update, follow the steps below to get an alternative updater:

  • Update Failure: The update didn't finish successfully.
  • Device Problem: The Spark is unresponsive or 'bricked.'
  • LED Issue: The LED lights on the Spark are blinking.

Step 1: Obtain the Alternative Firmware Updater

  1. Locate the chatbot in the bottom right corner of this page.

  2. Enter the serial number of your Spark amp into the chatbot.
    If the chatbot didn't prompt you to enter the serial number, please type in 'Spark 40 Alternative'.

    You can find the serial number of your Spark 40 on the rear of the unit, adjacent to the USB port. The serial number for the Spark follows this format: S040Cxxxxxxx (12 digits).


  3. The chatbot will then provide you with a link to download the alternative firmware updater.

    System Requirements for the Updater:

    • macOS: 10.13 or later
    • Windows: 8 or later

    The updater does not support Linux, ChromeOS, iOS, iPadOS, Android, or any other systems not listed.

Mac Instructions

  1. Step 1: Unzip the file

    Extract the downloaded file.

  2. Step 2: Connect Spark 40

    Turn on your Spark 40 and connect it to your computer with the provided USB cable.

  3. Step 3: Run the updater

    Right-click Spark40_FWUpdater_with_log.app and select "Open" to start it. A Terminal window will open.

    If you are unable to launch the firmware updater, please refer to the guide on "Open a Mac app from an unknown developer".
    This updater is specifically designed to update your Spark amp. It is completely safe and free from viruses.

  4. Step 4: Wait for completion

    Wait until the Terminal window displays "Firmware upgraded!" and your Spark 40 powers off automatically.

  5. Step 5: Verify the update

    Disconnect your Spark 40, power it on, and reconnect via Bluetooth. In the Spark app, tap the product card, scroll down, and check the firmware version.

  6. Step 6: Report issues (if needed)

    If the update is unsuccessful, export the text from the Terminal window: Shell → Export Text As… and send the file to our support team.

Windows Instructions

  1. Step 1: Unzip the file

    Extract the downloaded file.

  2. Step 2: Connect Spark 40

    Turn on your Spark 40 and connect it to your computer with the USB cable provided.

  3. Step 3: Run the updater

    • Double-click on Run_Updater_With_Log.bat to start the updater, or
    • Right-click on Run_Updater_With_Log.bat and select "Run as administrator".

    If you are unable to launch the firmware updater, please refer to the guide on "Run a BAT File on Windows".
    This updater is specifically designed to update your Spark amp. It is completely safe and free from viruses.

  4. Step 4: Wait for reboot

    Wait until Spark 40 reboots automatically. The LED lights will return to normal.

  5. Step 5: Verify the update

    Disconnect Spark 40, turn it on, and reconnect via Bluetooth. In the Spark app, tap the product card, scroll down, and check the firmware version.

  6. Step 6: Report issues (if needed)

    If the update is unsuccessful, send us the log.txt file from the updater's folder.

Should you have any questions regarding the process, our support team is always ready to help!

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