Firmware

I tried to update the CDJ-900’s firmware using a USB memory device, but it didn’t work, and the message “Main update file is corrupt.” was displayed on the display section.

Either the update file was not copied properly onto the USB memory device or there is a problem with the USB memory device you are using.

Download the update file again, then copy it onto the USB memory device before using it.

If it cannot be copied, use a different USB memory device.