CDJ-2000 firmware glitches

Hi,

I am having problems with one of my CDJ-2000s. It will not read any of my USBs (yes they are formatted to FAT 32 and yes they are read by my laptop). I was told that it could be a glitch in the new firmware? Is this possible? If so, would downgrading the firmware be a possible solution? If so, where can I download an older firmware? 

Thanks,

Dylan