This Pcm has two flash chips. One on each of the circuit boards. They are AN28F512 Intel chips.
You need to flash bin1 on the chip that goes on T-side circuit board and bin2 on the chip that goes on E-side circuit board.
You need to identify which chip goes where by trial and error or find pictures to identify sides.
If you flip chips Pcm will not fry so don`t worry.