not possible to make your phone into a walkman series, your phone functions and physical layout is different which makes it impossible. what you can do though is upgrade your firmware which may give you additional feature(software wise that is ie. languages, appplications) and i think K800 supports flash themes which makes your phone look really unique and cool. NOTE: like someone in the thread mentioned...MAKE A BACK UP OF YOUR GDFS. i dont know how else to stress how important that is. good luck