Brother MFC-9320CW Service Manual page 433

(3) Click the "Brother Maintenance USB Printer" icon to select. Drag the necessary firmware
program file such as LZXXXX_$.upd and drop it.
Note:
After rewriting Sub firmware (PCL/PS) or Main firmware is completed, the machine returns
to the ready state. When you write a program file continuously, turn OFF the power of the
machine, and then turn it on again as pressing the 5 button. Check that "
appears on the LCD.
(4) Upon completion of rewriting, the machine restarts and returns to the ready state
automatically.
6-8
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