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5.
The following is easy and user friendly upgrade instruction when an
upgrade is needed during A434L operation.
5.1
The following screen will appear if System button is pressed out of
the right side Mode buttons during the power is on.
Select "Upgrade" button on the top right side of the display or the
keypad after connecting USB Memory containing Upgrade file to
USB Port. If either the USB Memory is not connected to USB Port
or is not connected properly, "USB not connected!" message will
appear in the bottom left corner of the screen as follows. There
will be no more operation.
Upgrade Method
Figure 5.1 System Mode Screen
109
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