2.05.08 "unable to play the selected file"

I updated the firmware to 2.05.08 and now i cant play any music or videos or anything. Nothing will play. i tried reinstalling the firmware but it cant even recognize it, or any other older firmware. I have no idea how to fix this. i’m so lost and i’ve tried to find something to do to fix it. Please any advice will be greatly appreciated!

Try resetting to factory defaults or rollback using the firmware at the link below.

http://wdc.custhelp.com/app/answers/detail/a_id/5860

Thanks for the responce! Will all of my files stay on there though or will it remove any of them? Thanks!

THANK YOU it worked!