Take ECR-100F For example

Step 1:

Connect the computer to the cash register with serial line： 

 NOTE：When you do not have a serial port on your computer, the following information will be displayed when you run “Eutron Firmware Updater” .

It means is that” The serial port is occupied or does not have the serial port”

Please assist with a line as shown in the diagram:

Step 2:

Open the cash machine and set cash register into the “PG”（PROGRAM） mode.

Step 3:

Choose serial port in the computer register attached. 

Step 4:

Run “Eutron Firmware Updater” from PC.

Step 5:

Click “update firmware” button, you are asked for entering an update code(generally the firmware is a hex file).

 After selecting the correct firmware file, follow the prompt and choose yes each step.

Step 6:

Please do not power off the cash register or disconnect the serial connection during the upgrade process.

Step 7:

Upgrade finished: