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BIOS GA503RM

hi, how to program it8252e248a, i have this laptop and it was working perfectly before an update bios , after update bios it comes without display and no backlight of the keyboard, then i program the xmc256 with the dump and now the laptop gives display but the keyboard and the backlight of the keyboard doesnt work at all, i was trying with the firmware hotfix from asus but it closes suddenly and not update de firmware of the keyboard, so im trying to program the it8252e248a but i dont know the pinout, can you help me?
 
KB_pins=36 LEFT DOWN 08MM PD0=29 PD1=20 PD2=15 PD3=23 PD4=14 PD5=16 PD6=12 PD7=30 BUSY=26 STB=18 AFD=28 INIT=21 SLIN=19 KSI4=22 KSI5=24 FLASH=248 CHIP=IT8252E-
 

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