Install cbootimage by entering the following commands in the terminal:
sudo apt update sudo apt install cbootimage
Tools to dump and generate boot config table on Tegra devices
This package contains two programs to parse the boot config table (bct) of Tegra SoC based devices and to generate a new bct with appended bootloader (e.g. u-boot) read to be flashed to a storage device. The boot config table is used in the early boot process to setup the sdhci, DRAM memory controller and also points to the position of the bootloader.