Changing Device Tree with Signing (Nvidia Jetpack 4.3.1)

Ok but i did similar things like here , Modifying Jetson TX2 Device Tree without having to flash TX2 for the jetson xavier can be this a problem if am writing to a wrong boot section or harming the hardware in anyway ?

The change of device tree is mainly related to d3 because we want to write our own camera driver for this board. Kind regards.