Pioneer CDJ-850 Quick Start Manual page 3

STEP 4.
Insert the USB memory device into the USB
port.
Use the USB memory device onto which the
update file was copied in advance.
STEP 5.
Updating starts automatically.
The message "NOW UPDATING" flashes on
the main unit display and the progress is
indicated on a progress bar. At the same
time, the current version number and the
version number after rewriting are displayed.
Do not disconnect the USB memory device or
turn off the power during updating.
The "COMPLETE! Turn the power off"
message appears after approximately 1min.
This completes the updating procedure.
STEP 6.
Turn the power off and disconnect the USB
memory device.
STEP 7.
Check that the firmware has been updated
to the latest version.
Refer to "Checking the Version" to check
that the firmware is the latest version.
* If updating does not start or if "Updating has failed" is displayed when updating is completed:
The file you have downloaded may be corrupt.
Start over from downloading the firmware update file. If updating is still not possible, the problem
may be with the USB memory device. Try using a different USB memory device.
* If the progress bar does not progress during updating, if the "COMPLETE!" message does not
appear after 5 minutes, or if a message such as "MAIN firmware update failed" appears:
Contact a Customer Support Center.
STEP 3.
Set the update mode.
Eject the disc from the disc insertion slot
and turn the power off. Disconnect the USB
memory device and computer connected to
the CDJ-850.
Next, turn on the power while simultaneously
pressing the [USB] and [RELOOP/EXIT]
buttons.
(Keep pressing until the "POWER ON"
indicator on the main unit display turns off.)
When the message below appears, release
the button.