Hope it helps someone out there.
It came from a Generic "cygnus" nano,1GB mp4, second gen, 1.5 lcd.
Firmware version 2007/11/20 9.1.53 chipset AK1025_S75_SHP
extracted with s1res 3.6 and it works fine.
My cd also came for some firmware for a 1.8 lcd device "BO-25002"... cant tell you more. heres the file.
My mp4 came with one amv and 2 mp3 1 .lrc sample files. You can get them on this link if you like.
Thank you for keeping this site up.
PS:there are a lot of dead links on the download area.