June 30, 2017
PW3390 Firmware Update Procedures
HIOKI E.E. CORPORATION
1. Copy the firmware update file (pw3390.ver) to the root directory of a CF card or USB memory stick on a PC.
2. Turn on the PW3390 and insert the CF card or USB memory stick in which the firmware update file was
copied.
The settings will be initialized after the firmware update, so we recommend saving the settings
before the update.
3. Press [FILE] key, so that the file list is displayed.
In case of 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 in below.
Figure 2.File list screen (2)