Good news. It's interesting how this is happening to some and not others? My update went without a hitch, but good that there is a easy solution. I wonder if it's a temp file or a cached update from the previous install that is doing this and a reboot clears it. Either way it's good that nothing is ruined or gets bricked. Iv'e read how on other players updates wreak havoc. Cowon has never been that way. Very good clean track record, at least for me.
I didn't mean with the firmware update process itself. That has always been perfect with zero glitches. It was some time days later using it, on one instance there was no sound. So I restarted it an it was fine. It's weird tho how it would work fine for a few days and then one out of at least a couple dozen start ups there's no sound. Hasn't happened since either.