Tool/software:
Have identical issue with the parent thread -- EVM cannot boot from SDCard.
Confirmed the boot mode pins were set correctly (came as is). Plugged in UART cable, confirmed /dev/ttyUSBx were shown and the UART LED was on.
Ran 'screen /dev/ttyUSB0 115200' to capture boot log.
But screen did not show any boot messages.
Retried with ttyUSB1, ttyUSB2 and ttyUSB3 without success.
I recreated the SD Card using SDK's bin/create-sdcard.sh using the pre-built images.
None worked.