I burn TX2-i with backup image created on TX2 board [Jetpack 3.2.1] successfully.
The burn was using Linux computer with ubuntu 16.04 LTS.
But when trying to Login to TX2i board a black screen is displayed fo 3 sec. & then Login screen is displayed again.
I used sudo ./flash.sh jetson-tx2i mmcblk0p1 for restoring the image.