undelete for Marvell 88F682X

[bad_gui]

I accidentally deleted some mp3 files.  I searched for an undelete utility on the web and came across this
http://www.cgsecurity.org/wiki/TestDisk_Download

There is a binary version for
Marvell 88F628x Linux 2.6.32 Synology DS111, DS211, DS212+ NAS
When I untarred and tried to use it on my Guruplug Server plus, I get a permission denied error even though I
chmod a+x the binaries.  It is installed on a vfat formatted external usb.  I have a 2.6.33.7 kernel but the error
suggests this is not the conflict.

Any ideas?