Sorry for the double post, but I found the number :
ATJ2093H
Hynix
HY27UUO88G5M TPCB 709A
EDIT :
This one successfully update on my MP4... but the MP3 do not open :S
I'm trying to charge the battery but the screen flash...
Anyway, here is the Firmwire I used :
http://www.mympxplayer.org/full-vers...lcd-df566.html
If someone can help me to find anything else, I'll be really happy !
Thx in advance !