In a nutshell, upgrading firmware on Schneider-Electric Modicon M580 CPU requires you to download the new firmware file using Unity Loader.
You get get all the latest firmware files from the following URL. At the time of tis recording the firmware was version 3.1.

http://downloads.modicon.com/getFTPDoc.php/b74a339471498e90abd252267e3081a3

The screenshot below shows what the download webpage looks like.
Xybernetics Modicon M580 CPU Firmware File Download

If you unzip the firmware file, the firmware file extension is ldx. See screenshow below.
Xybernetics Modicon M580 CPU Firmware File Extension ldx

The firmware on the Modicon M580 CPU can be upgraded by connecting your laptop to the Modicon M580 CPU using the following media.
1) USB. Connect the USB cable to the Modicon M580 CPU mini-B USB port and a USB Type A to the laptop. The USB cable is as shown below.
Xybernetics Modicon M580 CPU Firmware File Extension ldx
2) Ethernet. You can use either the Modicon M580 CPU Service port or any of the Ethernet port on the Modicon M580 CPU; either by direct Ethernet cable connection or via a network. Upgrading firmware on the Modicon M580 CPU using a network is not recommended as a drop in network will potentially ‘brick’ your Modicon M580 CPU. Just be aware of that.

These are the steps to upgrading firmware on Modicon M580 CPU.

  1. Download the firmware and Unity Loader (if you do not have them) from the provided link above.
  2. OPTIONAL. Install Unity Loader application (if you do not have them in your machine).
  3. Connect the laptop to the Modicon M580 CPU using the USB cable (mini-B on one end and USB Type A on the other end).
  4. Launch Unity Loader.
  5. Click on Firmware tab.
  6. In the PC list box, select the .ldx file that contains the firmware file.
    6A. When connected with Ethernet, select “Ethernet” from the pulldown menu (bottom left-hand side) and click on Scan button to look for the PLC. Make sure that your MAC address matches your PLC.
    6B. If you are using USB, select “USB” from the pulldown menu (bottom left-hand side) and click on Scan button to look for the PLC.
    check that the MAC address indicated in the PLC box corresponds to the MAC address marked on the CPU.
  7. Make sure that the firmware you are trying to upload is the same as
  8. Check that transfer sign is green to allow transfer from PC to CPU.
  9. Click Transfer.
  10. Click Close.

Reference

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About the
I am a software developer in Calgary, Alberta, Canada with passion in getting my fingers in any new technology. I started software development when I was 10 years old and have never looked back. Now with well over 35 years of software development, I wanted to share some of these key knowledge with the people of the world in the wide web.