I lost my data but the space still exist.. help please

hello …

i have WD my passport 0614B R/n:c6B JAAJHA

suddinly i can’t see my backup files and all my data …

but the she size of partition still as read like this

i scaned the drive by bitdefender 2014 Licensed copy not cracked

unfortunately no hidden files also … but the radio bottons of the hide option is not checked

what can i do to solve this please …

after upgrade the firmware all is ok right now … thank You WD