recover deleted files on an android device in debian

• apt-get install testdisk
  
• mount an android device
  
• su account

• cd mount-position ( /media/3F30-AC25/ )
• photorec
1. select Android UMS Composite
2. select [Intel] as the partition table type
3. select whole...
4. select FAT/NTFS/... as the filesystme type
5. select another directory where one wants to save recovered files, and type Y
6. let them go... one can see the following directories in the directory which one selected in step 5 as follows:
   recup_dir.1
   recup_dir.2
   recup_dir.3
   recup_dir.4
   recup_dir.5
   recup_dir.6
   recup_dir.7
   recup_dir.8
   recup_dir.9

01234

• http://www.cgsecurity.org/wiki/PhotoRec_Step_By_Step