Kernel,uboot,dtb and rootfs upgrade in jetson TX2

Robotics & Edge Computing Jetson & Embedded Systems Jetson TX2
7

we dont need OTA feature.

we want to use a script to upgrade rootfs,dtb and uboot.

in Tx1 we were using BCT table now what is changed in TX2 for BCT.

we have a rootfs which we want to upgrade with recovery partion,how we can
do that?