*bootscript: <code>boot.scr</code>
U-boot file <code>u-boot.imx</code> must be stored into first raw sector of the SD card using <code>dd</code> command}}
{{ImportantMessage|text=Since '''XELK-3.5.0 ''' U-boot performs 2-stage bootloader providing two files: SPL and u-boot.img.
Both two files must be stored into SD card using <code>dd</code> command}}