Hioki 3390-10 Use and care manual

April 27, 2012
Model 3390-10 Firmware Update Procedures HIOKI E.E. CORPORATION
1. Copy the firmware update file (H3390-10.VER) to the root directory of a CF card or USB memory
stick on a PC.
2. Insert the CF card or USB memory stick with the copied firmware update file to the 3390-10, and
turn on the power.
The settings will be initialized after the firmware update, so save the settings before the update.
3. Press “FILE” key, so that the file list is displayed.
If using a USB memory stick, press either left or right key of PAGE to display the file list in the USB
memory stick.
Figure 1: File list screen (1)
4. Press “Next (F6)” key, so that the file list screen will be changed as shown below.
Figure 2: File list screen (2)

5. Press “Update (F4)” key, so that the following screen with a confirmation message appears.
Figure 3: Update confirmation screen
6. Press “ENTER” key to begin the update. The LEDs of “MEAS”, “SYSTEM”, “FILE”, “HOLD”,
“SHIFT”, and “START/STOP” keys will be lit.
Do not turn off the power while LEDs are lit.
If the update fails, the unit must be sent to HIOKI for repair and adjustment.
Figure 4: Update message screen
7. Update is completed in about 1 minute, and LEDs will be turned off. (The messages will continue
to appear.)
Remove the CF card or USB memory stick, and RESTART THE 3390-10.
The message “BACKUP ERROR system Initialized.” will appear when rebooting, but this is the

correct action after the firmware update. The message will be changed to “BACKUP PASS” from
the next start.
8. Confirm the version number in the setting screen by pressing “SYSTEM” key when the
measurement screen is displayed.