the rectangular samsung chip is a flash memory chip. the square chip printed(ATJ2075 or ATJ2085 or ATJ2051) is main controller of ur player.the firmware u going to look at must compatible with 1.controller(ATJ2085),2.Flash (ur is SLC chip),3.PCB(JTH-MP3801(B)V3.0),and 4.LCD model.
how to make PC recognize player in ADFU mode.
1.adjust the flash chip position, make the SAMSUNG logo face straight to u.on right hand side pins, count from bottom pin number 5,6,7 & 8 is the data pins.
2.remove battery from ur player,short-circuit either 2pins of 5,6,7 & 8.while short-circuit the pins, connect USB.u will promt to install new hardware.look for the ADFU file inside ur firmware upgrade program.
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