Indeed it's a complicated problem but if you just formatted the card and then you let it empty, a solution might be available. I would recommend using Recuva because it's a free data recovering software with
Deep Scan feature and great accuracy and most of all is free.
To proceed recovering the content of your microcard please follow these simple steps:
- Download and install the software using the setup provided and follow the instructions.
- Insert the card into the GPS and enable USB Disk Use.
- Start the application and using the wizard select the drive letter your card has in My Computer.
- Perform a
Deep Scan and wait
- Analyze the results and based on the green markers you may recover the content you lost.