Updating MLC-4R Panel firmware using the DownloadMACFirmware tool.
Created: 11-06-2025 10:35 PMLast Updated: 11-06-2025 10:35 PM

OVERVIEW

This procedure walks you through updating the firmware of an MC-MLC-4R panel. Each panel must be updated individually; there is no group update. There can only be one panel on the comm loop during the update process.

Firmware Update Process

  1. Ensure no other host is connected to the MC-LTEA. In Intelli-Site the driver should be offline. The MC-LTEA must be running the latest firmware version
  2. Ensure there is only one MLC-4R panel on the current comm loop. P1 firmware versions earlier than 2.4.x.x are not supported.
  3. Double-click the DownloadMacFirmware.exe file to launch the application.
  4. Set the IP address of the MC-LTEA you are using to update the MAC panels and click the Connect button.
  5. The prompt will show “Waiting for a service pin.” Press the service pin button on the MLC-4R panel. The Panel Type, Net, Node, and Device ID fields will update with the information returned by the current panel. The OS, P1 and P2 firmware versions will also be reported.
  6. If the P1 version shown is earlier than 2.8.8, the base OS firmware will need to be updated before the P1 firmware can be updated. Change the Firmware File combo box to b6050v4.NDL and click the Download Firmware button. Be patient, the OS download takes quite a bit longer to complete.
  7. Ensure the Firmware File combo box shows MLC4Rx.NDL and click the Download Firmware button.

The Download Firmware Progress window will show the progress of the firmware download. Please be patient, as this may take a minute or so to complete. Once complete, a popup message will confirm the download was successful. You may remove the panel, and if needed, replace it with another, and repeat these steps.

Note: Do not change the values of any controls unless instructed to by this manual or support.

Troubleshooting

Download Failed - What should I do if the firmware download is interrupted and fails? If the download is interrupted for any reason, click the Set Address button, then the Download Firmware button again. If this still fails, contact support.

Could not determine OS version, Download Failed – What should I do if I see the error “Could not determine OS version, download failed” after downloading the OS firmware b6050v4.ndl? Start the process again.