Before starting this utility you will need:
Three files are required to start the Mutoh Maintenance Engineer Assistant utility.  These files are required to be in the same folder.
1.  config.ini
2.  DUMMY.cfg
3.  MUTOH Maintenance Engineer Assistant.exe
If this Utility is moved or copied all files must move to the new folder.

You will also need two or more of the follow items:

1. Current IP address of your ValueJet printer.  (Required)
One or more of the following file types are required for any of the downloading operations.
2. .jfl  file for firmware update
3. .prm  file for uploading or downloading the mainboard parameters
4. .mfl  file for updating the heater firmware

To download firmware or parameters or to upload parameters:
Open Setup, Option to set the current ValueJet IP address.
Place the ValueJet into firmware Load mode:
To access Firmware download mode; Press and hold the Left arrow during power ON.  No delay is necessary.
Confirm that the IP address is correct.  If it has been setup already in User Setup menu then this should default to that IP address.  Press Enter to confirm.
Display should show "Waiting for command".

Open the Utility and select the appropriate 
The printer will know what to do with Whichever file type you send.

Troubleshooting the Utility:
If the utility starts in Japanese then select; 
Setup, Language then English and restart the utility.

If the utility opens and the display is too small to view, close the Utility.
Open (edit) the config.ini file.  Locate the following section and change the Width and Height to 450 and 500 respectively.  Close the 'ini' file and restart the Utility.  Do not delete or add any lines or characters.
[Window]
Top=225
Left=711
Width=450
Height=500