Your downloaded files are most probably on /home/user/MyDocs But directly in this folder on /home (mmcblk0p3) partition. Not on the MyDocs (mmcblk0p1) partition (which is mounted in normal runtime, but gets unmounted in USB mode). This is a behaviour normal to Linux, but should have been avoided by Nokia for a 'Smartphone'! you need: developer mode devel-su umount /home/user/MyDocs