I have a custom board using imx6D, I am using the serial down-loader mode to download the u-boot.imx file and it was jumping to the u-boot properly; the u-boot console window is not shown.
Now the SoC after I download the u-boot.imx,doesn't jump to u-boot and the console is not running although the imx_usb status is ok.
Please note that the last time the board was working, I downloaded the u-boot.imx using sb_loader.
I am thinking the problem may be either in the RAM or the boot rom code.
Please I need advice how to proceed with debugging.