Hi again....I'm begining to think that I'm the only posessor of this type of player (chip type, board type even display type). I really don't know what to do anymore, I tried all the firmwares and upgrade tools. I guess I'll try to wait for s1fw to upload some more firmwares on s1mp3.net . I hope he will find some for ATJ2097N . The firmware s1fw sent me (for B631 Board No.) was for a ATJ208x chip and of course it didn't work for my crappy mp4. Anyway thank you all for the feedbacks and replies
P.S. Sorry I posted twice, I'm kind of desperate here
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