How to burn recovery.img to the specified partition

according to Topic 230718, you’re using Jetson TX2 NX and BSP version 32.7.2

may I know what’s the actual use-case?
there’s “recovery” partition to contains recovery image, you may try following commands to flash specific partition.
for example, $ sudo ./flash.sh -r -k recovery jetson-xavier-nx-devkit-tx2-nx mmcblk0p1