I bought for equivalent of US$20 the above mentioned device and it was working completely. it's manual says MP3 PERSONBL STEREO.
After 1 month of not using my device when I turned on the device it did not show usual screen. First I put in charging overnight. Then I mindlessly downloaded firmares. But it is not working. In the battery case a code is written. It is TD-20060300241
Please use layman language as much as possible.
At present, I can see faint red light when I put the battery in.
Thanks in advance.