AGX Xavier update dtb without using flash.sh

Can i just push my generating dtb to my xavier board for updating my new dts setting?
My board is AGX Xavier, and L4T = # R32 (release), REVISION: 5.1, GCID: 26202423, BOARD: t186ref, EABI: aarch64,

If there is an “FDT” key/value entry in “/boot/extlinux/extlinux.conf”, then it uses that. If not, then it reverts to the one in the partition. The FDT key/value entry is just a file copy into “/boot”. This will work unless you’ve burned security fuses (at which point only signed partitions will be used).