[AGX Dev Kit] Replace devicetree - error: "Failed to flash/read t186ref."

Hi,

I’m using AGX Dev Kit with JetPack 4.5.2 and I try to find a way to replace the device tree. One way is to flash the whole system but I try to avoid this way.

The other way is to flash the devicetree only. In the past this has been successfully done with Jetson TX1:

$ sudo ./flash.sh -r -k DTB jetson-tx1 mmcblk0p1

or

$ sudo ./flash.sh -r -k DTB -d <device tree> jetson-tx1 mmcblk0p1

So I adapted this call for the AGX Dev Kit like

$ sudo ./flash.sh -r -k DTB jetson-agx mmcblk0p1

but unfortunately I get

Error: Return value 13
Command tegradevflash_v2 --write DTB 1_kernel_tegra194-p2888-0001-p2822-0000_sigheader.dtb.encrypt
Failed to flash/read t186ref.

What is the correct way to put a new devicetree on the AGX Dev Kit (without flashing the whole system)?

Thanks in advanced.

kernel-dtb. Not DTB.

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