4-4
Confidential
1.2.2 Installing firmware
<Operating Procedure>
Note:
• DO NOT disconnect the power cord or USB cable from the machine or computer 
during installing.
• If the install is failed, turn OFF the machine and turn it back on. The machine enters 
the firmware installing mode automatically. Continue to the operating procedure 
below.
LED models
(1) Open the front cover while the power 
switch is turned OFF.
(2) Press and hold the [Go] key, and turn 
ON the power switch. The Toner, 
Drum, and Paper LEDs light.
(3) Release the [Go] key. All LEDs go out.
(4) Press and hold the [Go] key for more 
than two seconds until the Ready and 
Paper LEDs light. Release the [Go] 
key and close the front cover.
(5) Connect the machine to your 
computer using the USB cable.
(6) Open the temporary folder and 
double-click "FILEDG32.EXE" to start 
it, and select "Brother Maintenance 
USB Printer".
(7) Drag and drop the required program 
file (ex: LZXXXX_$.djf) in the same 
folder onto the "Brother Maintenance 
USB Printer" icon. The file is loaded to 
the machine, and installing to the flash 
ROM starts.
(8) When installing is completed, the 
machine restarts and returns to the 
ready state automatically.
(9) Turn OFF the power switch of the 
machine, and then repeat the 
procedures (1) to (8) to install required 
firmwares.
(10) Turn OFF the power switch of the 
machine, and disconnect the USB 
cable.
LCD models
(1) Press the [OK] key and then the [Go] 
key while the machine is in the ready 
state. Then, press the [▲] key four 
times to enter the maintenance mode.
(2) Connect the machine to your 
computer using the USB cable.
(3) Open the temporary folder and 
double-click "FILEDG32.EXE" to start 
it, and select "Brother Maintenance 
USB Printer".
(4) Drag and drop the required program 
file (ex: LZXXXX_$.djf) in the same 
folder onto the "Brother Maintenance 
USB Printer" icon. The file is loaded to 
the machine, and installing to the flash 
ROM starts.
(5) When installing is completed, the 
machine restarts and returns to the 
ready state automatically.
(6) Repeat the procedures (1) to (5) to 
install required firmwares.
(7) Turn OFF the power switch of the 
machine, and disconnect the USB 
cable.