OmegaZero

Hey, people! ¬¬ My Sony NWWM MEM AAD2 (1 gb) was on a format that I don't quite remember now... Uh.. I remember that it wasn't FAT or FAT32 Anyway.. I tried to reformat it to do something and it didn't work for this other thing either But, the deal is that I take the music files, put in the device and when I disconnect it from the USB and try to turn it on, it displays "FORMAT ERROR!" and does nothing more -.- Also, I tried to reformat it with the HP USB Format tool and it said "Device media is write-protected" What do I do?