To update your M-LINK firmware:

Step #1: Start the PC-M-LINK software.

Step #2: Open the Setup Display.

Step #3: Click on the "Update Firmware" button in the lower right corner.

Step #4: Click the "Load New Firmware File" in the Update Firmware utility

Step #5: Select the appropriate text file appropriate D425-103335_rev_X-XX-XX.txt

Step #6: Click Update firmware, we recommend not to make anything on your computer while the M-LINK is updating for about 5 minutes. If you have a laptop, connect the external power supply.