Brother DCPJ525W Service Manual page 272

(2) Connect the machine to your PC using a USB cable.
(3) On the PC, run "filedg32.exe."
The Filedrgs window appears.
(4) Drag and drop the firmware (e.g., lz0023_a.pmu) onto the Brother Maintenance USB
Printer driver icon in the Filedrgs window.
Note: To use a firmware file, extract it beforehand by double-clicking. It is a self-extracting
file having the extension .exe.
After approx. 2 to 5 minutes, the loading operation is complete and the machine
automatically reboots and returns to standby.
(5) On the machine, display the version of the installed firmware on the LCD by pressing the *
and # keys simultaneously.
Sample version number shown on the LCD: 0A810060953:4B69
(The top line shows the version number.)
If the displayed version number is identical with the firmware version you installed, the
loading operation has been successfully finished.
Note: If loading operation ends abnormally, turn the machine off and on. Wait for the machine
to emit a long beep and automatically enter the firmware loading mode, and then perform the
loading procedure above again.
P0601242005:4123
B0601242005:1C8D
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Confidential