
Pioneer releases new firmware for the Pioneer
CDJ-400 DJ cd player.
USB memory device detection time(time between insertion of the USB memory device until tracks can be selected)
Possibility to use a USB hub (USB 2.0-compatible)
Improved when using your CDJ-400 connected to a PC application (Pioneer DJS, Serato Scratch LIVE, etc.).
So speed is improved but most important the support for use of a USB hub is supported. Connect you 2
CDJ-400's with a USB hub to one USB Hard Drive. You'll only need 1 Hard Drive to acces all tracks with both CDJ's.
Hold Exit/Reloop for 10 seconds and your current firmware version will show in the display.
Only update when your firmware is < 1.30
Download the file from the
official Pioneer website only

Get a USB stick and format it FAT-32

Copy the downloaded and extracted file (
CDJ400.HEX) to the USB stick

Remove the disc from the CDJ-400 and turn it off

With power turned OFF, remove any connected USB memory or computer

While simultaneously holding the TIME MODE/AUTO CUE button and RELOOP/EXIT buttons, set power to ON.

When 'DOWNLOAD' appears in the display, release TIME MODE/AUTO CUE and RELOOP/EXIT button.

Insert the USB memory or disc containing the firmware update file.

The update progress will start automatically

Update will be completed in about 1 minute and will show 'Complete' in the display

Update is completed when power is switched off.
Read the full update procedure on the official website (below)