Hi.............I`m having the same problem too
I have 512 S1 Mp3 player Samsung Stick, I have also formated, in the hope of clearing out a VBS/Saraci virus that came with the Mp3 player
There seems to be little or no information regarding how to reset the player or even too re-fresh the software/firmware.
The translated user manual is crap, there is a remote upgrade program on the disk, but cannot locate some file called DogRUClt.dll, and the other tool: MP3 Player product tool V3.3 seems to be as useless as a chocolate fire guard.
It seems were stuck till we find the link to an upgrade site
