Chinese characters?

I just bought a 1G Sansa Express, which let me choose language, and fter choosing simplified chinese, only the menu displayed chinese, all  artist names, song names in chinese characters were displayed oddly, while my sony, iriver mp3 players do display chinese characters even if you choose language english. I heard it is the firmware that I have that won’t display chinese. My firmware version is 01.01.05a. Is there any firmware that could be used to upgrade my Sansa Express?