How to update KAS miner firmware?

Updating your KAS miner's firmware ensures optimal performance, stability, and security—always use the correct model-specific file and follow proper procedures to avoid issues.

Jul 23, 2025 at 05:21 pm

Understanding KAS Miner Firmware and Its Importance

The firmware of a KAS miner is the embedded software that controls the hardware operations, including hash rate management, temperature regulation, power efficiency, and communication with mining pools. Keeping the firmware updated ensures optimal performance, improved stability, and protection against known bugs or security vulnerabilities. Outdated firmware may result in reduced efficiency, overheating, or failure to connect to the mining pool. Manufacturers periodically release firmware updates to enhance functionality and support new mining protocols. It is essential to recognize that updating firmware is not just a performance booster but also a maintenance necessity for long-term mining operations.

Preparing for the Firmware Update Process

Before initiating any firmware update, certain preparatory steps must be followed to prevent hardware damage or data loss. First, ensure the KAS miner is powered off and disconnected from the mining pool. Next, verify the exact model of your KAS miner, as firmware versions are often model-specific. Visit the official KASPA mining website or authorized firmware repository to download the correct firmware file. Use a reliable and stable internet connection to avoid file corruption during download. It is recommended to use a high-quality microSD card (Class 10 or higher) with at least 8GB capacity, formatted to FAT32, to store the firmware. Make sure the microSD card is virus-free and contains no other files to prevent conflicts during the update.

Downloading the Correct Firmware File

Navigate to the official KASPA development portal or the manufacturer’s firmware distribution page. Locate the latest firmware version compatible with your KAS miner model. The firmware file is typically provided in a compressed format such as .zip or .tar.gz. Download the file to your computer and verify its integrity using the provided SHA-256 checksum. This step ensures the file has not been altered or corrupted. Extract the contents of the archive, which should include a .bin or .img file—the actual firmware image. Do not modify this file in any way. Copy the extracted firmware file directly to the root directory of the prepared microSD card. Ensure no additional folders or subdirectories are created during the transfer.

Flashing Firmware Using the MicroSD Card Method

Insert the microSD card containing the firmware into the designated slot on the KAS miner. Power on the device while monitoring the status LEDs. The miner should automatically detect the firmware file on the card and begin the flashing process. During this phase, the LED indicator will typically blink in a specific pattern—often alternating red and green—to signal that the update is in progress. This process may take between 5 to 15 minutes, depending on the firmware size and device model. Do not interrupt power or remove the microSD card during this time, as it may result in a bricked device. Once the update completes, the LED will return to a steady state, usually solid green, indicating successful installation.

Updating Firmware via Web Interface (Alternative Method)

Some KAS miner models support firmware updates through a built-in web-based control panel. To use this method, connect the miner to your local network via Ethernet. Power on the device and access its IP address using a web browser on a connected computer. The default IP is often displayed on startup or can be found using network scanning tools like Advanced IP Scanner. Log in using the default credentials (commonly admin/admin or root/root). Navigate to the Firmware Update section under the System or Maintenance tab. Click on the "Choose File" button and select the downloaded firmware .bin file from your computer. Confirm the update and wait for the progress bar to complete. The device will automatically reboot after installation. Verify the new firmware version in the system information panel.

Troubleshooting Common Firmware Update Issues

If the miner fails to boot after an update, first check the microSD card for errors—reformat it and re-copy the firmware. A corrupted file or incompatible card can prevent successful flashing. If the web interface method fails, ensure the firmware file matches the exact model and version requirements. A mismatched file may cause the system to reject the update. In cases where the miner becomes unresponsive, perform a hard reset by holding the reset button (if available) for 10 seconds while powering on. If the device still does not respond, consult the manufacturer’s recovery guide, which may involve using a serial console or JTAG interface for low-level reprogramming. Always double-check power supply stability, as insufficient voltage can disrupt firmware writing.

Verifying the Updated Firmware Version

After a successful update, confirm the installation by accessing the miner’s system status page. This can be done either through the web interface or by connecting a monitor via HDMI (if supported). The firmware version should now display the newly installed number. Compare this with the version listed on the official release notes to ensure accuracy. Additionally, monitor the miner’s performance over the next 24 hours—check for stable hash rates, normal temperature readings, and consistent pool connectivity. If anomalies persist, consider re-flashing the firmware or contacting technical support with detailed logs.

Frequently Asked Questions

Can I roll back to an older firmware version on my KAS miner?

Yes, you can downgrade firmware by flashing an older compatible .bin file using the same microSD or web interface method. However, downgrading may disable features or reintroduce bugs fixed in newer versions. Always back up current settings before proceeding.

What should I do if the LED remains red after the update?

A persistent red LED indicates a failed flash or boot error. Try reinserting the microSD card, re-flashing the firmware, or testing with a different card. Ensure the firmware file is correct and not corrupted.

Is it safe to update firmware over an unstable internet connection?

No. An unstable connection during a web-based update can corrupt the firmware. Always use a wired Ethernet connection with high stability. For wireless setups, consider using the microSD method instead.

Does updating firmware erase my mining pool settings?

In most cases, firmware updates preserve pool configurations. However, major version upgrades may reset network or pool settings. It is advisable to note down your pool URL, username, and password before updating.