Remove metal bar securing side buttons, careful of the extremely tiny springs that provide pressure from the frame to the buttons, then be free to remove side buttons.
Finally it leaves the LCD screen with digitizer and front housing.
It is better to replace Moto X Style LCD screen and digitizer assembly and front housing together, if you have no confidence to remove it without breaking the screen during the repair work.
Can anyone tell by looking at the board if the X Pure has a FM chip that is wired? Currently all anyone is saying on forums is that the phone isn't FM enabled (which could only mean it isn't turned on), not that is is missing the chip or that the chip hasn't been wired to allow the FM to be enabled.