Jetson.io failed to start with nvidia jetson nano

[cianolieslagers.sji]

Hi,

I am workig on a nvidia jetson nano at the moment. I am trying to configure the SPI pins. To do this I want to use the Jetson Expansion Header tool. The issue is that I recieve the following erro: “no DTB found for NVIDIA Jetson nano Developer kit”.
I don’t understand why i have this error. Below I have images of the extlinux.conf and of my boot. Here you can see that the DTB files exist and that it is added correclty. Does anybody have any advice? I dont want to fully reset my Nvidia because I would lose a lot of my work.
Thanks!

[KevinFFF]

Hi cianolieslagers.sji,

Are you using the devkit or custom board for Jetson Nano?
What’s your Jetpack version in use?

Have you customized device tree or modified any files under /boot before?

Please share the result of the following command on your board.

$ cat /etc/nv_tegra_release
$ cat /etc/nv_boot_control.conf
$ ls -l /boot