Hello, I have one of these nice walkmans (WM-FX663), didn't use it for a long time. Now, after few days of using, there is a problem - the software is some kind of freezed, after inserting the battery the display shows all posible signs and no button is working. Years ago I solved this problem - reset the software by pushing some 2 buttons for a while (some guy from service told me the propper combination). This info is not in the manual, and possibly is (or in fact was) officialy only for autorized services. Don't You know the propper combination? Thank You for a help. fluke