Gurudave , at the moment your firmware version is not supported by the extraction tool S1fwx. Without an extracted firmware you can't safely your player. Downloading someone else's themed firmware to flash into yours would very likely 99% brick it instead.
I'll suggest that you keep your player as it is until it is at least supported in future.
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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
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