I have a iMX6SX SABRE SD (SCH-27962 Rev. C) board. There appears to be some problems on the board. The board couldn't be brought up with a SD card. The demo image I used is fsl-image-gui-x11-imx6qdlsolo.sdcard from L4.1.15_1.0.0-ga_images_MX6QDLSOLO.tar.gz. I connected a USB Debug cable to the board, but there was nothing outputted on the PC terminal during boot up. First, I would like to know if the demo image is an appropriate one for the board. Second, I would like to get some help to diagnose the board if there are any problems on the board.