Panasonic DP-C305 Service Manual page 908

Local Firmware Update Tool (Parallel /USB Port)
The selected Firmware Code File(s) are
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indicated. Uncheck the box if you do not need
to transfer a file.
On the unit side:
Set the unit to the Firmware Update Mode.
Before proceeding ensure that a USB cable or
a Parallel cable are connected from the unit to
the PC.
Click [Next>]
The Firmware Code File starts transferring.
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When there is more than one file to be
updated, the operation will be the following:
For USB connected unit:
they are transferred in turn automatically if the
unit is ready to receive the next firmware code
file.
Note: If you are updating the
For Parallel connected unit:
the confirmation screen is displayed when the
current firmware code file transfer is finished
and there are remaining firmware code files.
Click [OK] when the machine is ready to
receive the next file.
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DP-2310/3010, the sending of
sequential multiple files to the unit
isn't done automatically. The
"Waiting..." display on the PC will not
advance to "Executing..." until you set
the unit back to USB Firmware
Update on the machine to start
receiving the next file. See Unit
information of the Firmware
Update Mode on the next page.