emmcboot is missing, I mean when the switch is positioned eMMC it instead contains NANDBOOT
The lower mark is only showing that nand is detected,not booting from nand. Only the EC value should be different between booting from emmc or nand.
Yes sir. What I meant is that the EC value remains the same when I switch to the eMMC mode. The image above is just for reference.
Ok than i guess there is a hardware issue (maybe directly on the switch)
Looks like a hardware issue. If you have multimeter, you can check if the switch working correctly.