If you wanna get your data back, you need use some data recovery tool. I had the issue before, and I used EaseUS Data Recovery Wizard. It helped me solve the problem. you can take a try.http://www.easeus.com/resource/data-recovery-story/easeus-data...
I had the issue before. I searched online and found some data recovery tool. it solved my problem. i used EaseUS. You can take a try.http://www.easeus.com/data-recovery/card-recovery-software/digital-camera-memory-card-recovery.htm