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5.5
Operating Method of Enforced Firmware Overwriting
Mode
Enforced firmware overwriting mode is a mode to forcibly
overwrite the transceiver firmware when the operations as
instructed in Section 2.2.2 "How to Enter Each Mode" does not
allow the transceiver to enter the firmware programming mode,
for instance, when the transceiver fails to start up due to the
transceiver failure.
(1) Prepare the followings:
• Transceiver (NX-3400)
• Battery jig
• Programming interface cable (KPG-36U or KPG-36X)
• DC Power supply
(2) Disassemble the transceiver to the condition shown in the
figure.
(3) Connect a transceiver, battery jig and programming
interface cable (KPG-36U or KPG-36X).
(4) While FLDM terminal has a short-circuit with GND terminal
on the PCB, turn the DC Power supply output ON.
1-68 (No.RA070<Rev.001>)
(5) Upon startup of KFL, "FIRMWARE PROG" appears on an
LCD, and the Yellow LED on the transceiver lights.
(6) Start KFL up, select the desired firmware you wish to
overwrite, select the COM port number and baud rate, and
then click the "Write" button.
Note:
(7) Upon completion of the firmware overwriting,
"CHECKSUM xxxx" appears on an LCD, and the Red LED
on the transceiver lights.
FLDM terminal
GND terminal
Configuring "Auto" for baud rate automatically apply
the maximal speed of baud rate allowed for a
programming cable connected to the selected COM
port number.
Upon start of overwriting on the transceiver,
"LOADING" appears on an LCD, and the Green LED
on the transceiver lights.
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