How to update from L4t R32.5.1 to R32.7.3 at runtime

Hi,How to update from L4t R32.5.1 to R32.7.3 at runtime?
We had some customized designs contained uboot,kernel,and rootfs.
We update bup for u-boot and dtb modifications, and update kernel Image and many
modules.ko files at runtime.
But we didn’t update rootfs, because we won’t upgrade the l4t release before.
Now we need update from L4t R32.5.1 to R32.7.3, so rootfs need update.
So we want to know how to update the rootfs, we just update u-boot and kernel, the devide cann’t display.

Help to support! We udpate from R32.5.2 to 32.7.3:
First,
sudo vi /etc/apt/sources.list.d/nvidia-l4t-apt-source.list
deb https://repo.download.nvidia.com/jetson/common r32.7 main
deb https://repo.download.nvidia.com/jetson/t210 r32.7 main
Second:
$ sudo apt update
$ sudo apt dist-upgrade
but it will be error:
scala@localhost:/$ sudo apt dist-upgrade
Reading package lists… Done
Building dependency tree
Reading state information… Done
You might want to run ‘apt --fix-broken install’ to correct these.
The following packages have unmet dependencies:
nvidia-l4t-3d-core : Depends: nvidia-l4t-init (= 32.7.3-20221122092935) but 32.5.2-20210709090126 is installed
nvidia-l4t-bootloader : Depends: nvidia-l4t-init (> 32.7-0) but 32.5.2-20210709090126 is installed
nvidia-l4t-init : PreDepends: nvidia-l4t-core (< 32.6-0) but 32.7.3-20221122092935 is installed
nvidia-l4t-kernel : Depends: nvidia-l4t-init (> 32.7-0) but 32.5.2-20210709090126 is installed
nvidia-l4t-x11 : Depends: nvidia-l4t-init (= 32.7.3-20221122092935) but 32.5.2-20210709090126 is installed
nvidia-l4t-xusb-firmware : Depends: nvidia-l4t-init (> 32.7-0) but 32.5.2-20210709090126 is installed
E: Unmet dependencies. Try ‘apt --fix-broken install’ with no packages (or specify a solution).
scala@localhost:/$

What should we do?

Hi 18502109920,

It seems you are using the custom board for Jetson Nano.

Could you help to try the following command to fix current apt issue?

$sudo apt purge "nvidia-*"
$sudo apt --fix-broken install
$sudo apt update
$sudo apt upgrade

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