Lenovo thinkpad e14 gen 5 nm-f311 ke611/ke451 schematic

[chanex]

Lenovo thinkpad e14 gen 5
nm-f311 ke611/ke451
serial : PF-5ENAW9
type no. : 21JL-S3GE2D

Need ec pinout for flashing bios

i only have xzz it8390 programmer but i dont know where to pin sda,scl and 3.3v