you might have better luck modifying the post below to your current firmware version it basically reinstalls the OS and leaves all the data in the shares intact if on restart the shares are missing just add them via the dashboard and your files will be there.
any software that you installed will be removed keep that in mind
http://community.wd.com/t5/My-Book-Live/Reset-firmware/m-p/594345/highlight/true#M25012
i would however backup any important files as a precaution. I’ll post my mdadm.conf file below
