I am changing the boot order with eMMC as the highest priority. I have updated the dts and generated dtb using
dtc -I dts -O dtb -o cbo.dtb cbo.dts
And I can flash the CPU-BL partition alone with
sudo ./flash.sh -r -k CPUBL-CFG --image bootloader/cbo.dtb p3449-0000+p3668-0001-qspi-emmc mmcblk0p1
But while doing full flash, boot order is not updating. I am not sure which file to update int L4T folder. Please help.