Please help to locate UART check points on Sony XperiaXZ motherboard.
I am trying to flash PostmarketOS on my old SperiaXZ, to use it as headless mini server. I tried to generate custom image in collaboration with AI, but attempts fail. The kernel looks to crush before USB is activated to show me the logs. Looks like the last resort is to try to read the logs from serial port on motherboard. I found pictures of motherboard, though not excellent resolution. Probably somebody had such an experience to work with serial on this device? Appreciate you help to locate TX, RX and GND control points on attached pictures.