Brother DCP-9010CN Service Manual page 451

(4) "Program Update/Press Start" appears on the LCD. Press the Start/Black or OK button
to start. "Program Updating/Do not turn OFF" message appears on the LCD with Data
LED blinking while rewriting the firmware. DO NOT turn OFF the machine.
(5) When the rewrite is finished, the machine automatically restarts.
(6) If you continue to rewrite other firmware and no file names are displayed, wait for a while,
and take out the USB flash memory and insert it again. When file names are displayed,
select the program files which need to be rewritten, and repeat the above procedures (3)
to (5) to rewrite all the selected program files.
(7) When the rewrite of the main firmware is finished, the machine automatically restarts.
(8) Remove the USB flash memory drive from the USB direct interface once the update have
finished.
(9) Next, make the settings according to the country. (Refer to
(Function code 74)" in Chapter
Memo:
You can check the firmware version of the Main firmware and the Sub firmware (PCL/PS)
on the display of the machine's log (Function code 80). (Refer to
machine's log" in Chapter
7)
7.)
6-10
"1.4.23 Setting by country
"1.2.27 Display of the
Confidential