Wison co. Ltd. Version 9.0.50. Upgrade software

I received the player this week from Hong Kong and went about uploading my 4GB mp3/mp4 songs to it. Wasting no time the player started acting up, most of the files I uploaded became corrupt, the player showed “Format error!" when trying to play them. I tried formatting the unit (using FAT) and had the same problems.
Could someone please help me find the right software to upgrade the mp3 player.
Please contact me on bond007_mlt@hotmail.com

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