linux is not booting from sdcard in imx6ul starter kit?

i have bought connect core imx6ul starter kit as per guide of videos we copy uncompressed file of in sdcard after connect cable with pc and open serial port.

when i pressed reset button we can not get reply from board after press enter of key board.

please help me out of this.

This board cannot boot from SD card. The files in SD card are used to update flash. Instructions here:

If your board no longer boots from flash you need to recover via USB: