# How to flash kernel-dtb and kernel module without make system.img and rootfs？

**URL:** <https://forums.developer.nvidia.com/t/how-to-flash-kernel-dtb-and-kernel-module-without-make-system-img-and-rootfs/254791>\
**Category:** Jetson Orin NX\
**Tags:** reflash\
**Created:** [May 29, 2023, 9:26am UTC](https://forums.developer.nvidia.com/t/how-to-flash-kernel-dtb-and-kernel-module-without-make-system-img-and-rootfs/254791 "2023-05-29T09:26:19Z")\
**Posts on this page:** 1\
**Showing post:** 4

<div class="post-metadata">

**Author:** ![Xzz](https://sea2.discourse-cdn.com/nvidia/user_avatar/forums.developer.nvidia.com/xzz/32/236333_2.png) [@Xzz](https://forums.developer.nvidia.com/u/Xzz)\
**Post date:** [May 30, 2023, 2:09am UTC](https://forums.developer.nvidia.com/t/how-to-flash-kernel-dtb-and-kernel-module-without-make-system-img-and-rootfs/254791/4 "2023-05-30T02:09:14Z")

</div>

Hi, jchaves,  
Thank for you reply, but I didn’t find effective way to flash kernel-dtb individually in the link you provide.  
Reference to this link, flash.sh cannot flash data to external devices.

> [@Boot from external drive](https://forums.developer.nvidia.com/t/boot-from-external-drive/182883/1):
>
> 1. flash.sh will not flash anything to your external drive.

My environment is :Jetson Orin NX 8GB SOM + customized carried board.  
And I flash kernel+ rootfs to the NVME device ,which attach on the carried board .

Can u give me some useful command how to update kernel-dtb to NVME device with l4t\_initrd\_flash.sh?

---

_[View the full topic](https://forums.developer.nvidia.com/t/how-to-flash-kernel-dtb-and-kernel-module-without-make-system-img-and-rootfs/254791)._