gsmtechno , it is extremely difficult to recover Sigmatel players, due to a lack of tools and firmwares.
i'll suggest that you contact your seller for an exchange if it is still under warranty.
Why are clones called MP4 Players, when they don`t play .MP4 at all?
It`s like an MP3 Player which plays Music CDs only.
T39 doesn''t sound as good as my T29