Onixer

Hello to everyone, i'm new to this forum and not a native english speaker so pardon me if I mispell. I have a problem with my NW-A806, when I try to transfer music from my computer to my walkman through SonicStage, the songs transfer, the walkman's memory starts to get full, but when I disconnect my walkman, none of the songs that I put in it are there and the memory is the same as it was before. It has the lastest firmware 1.03, and when I try to reinstall the firmware it gives me an error "the update tool failed to update the software of the NW-A806 device to version 1.03"