Android - Data Recovery - How to Restore Deleted / Formatted Files on HD Micro SD Card
Take a look at PhotoRec.
There are also similar question on Super User that may help:
- Recover data from SD card
- How do I recover files from an USB flash drive?
Here's the full list of Data Recovery Program links:
- Easeus Pro
- Data Recovery Tool a nice tool but it's not free
- PhotoRec and TestDisk from CGSecurity
- NTFS Undelete (works also with FAT32 unlike the name suggests)
- Active File Recovery