Please run below command with the attached zip file right before flashing your system and see if it can fix the issue.
$ unzip -B 5.1.6.1_dtb_files_with_USB_fix.zip -d ~/nvidia/nvidia_sdk/DRIVE_Software_10.0_Linux_OS_DDPX/DRIVEOS/drive-t186ref-foundation/tools/host/flashtools/flash/t18x/rcmkernel
5.1.6.1_dtb_files_with_USB_fix.zip (134.1 KB)