Jetson Orin Headless Flash No Screen

I have Jetson AGX Orin Developer Kit 64GB
I have NvMe storage
I followed these steps

it gave this result

[ 450.7214 ] Flashing completed

[ 450.7218 ] Coldbooting the device
[ 450.7266 ] tegrarcm_v2 --chip 0x23 0 --ismb2
[ 450.7314 ] MB2 version 01.00.0000
[ 450.7598 ] Coldbooting the device
[ 450.7648 ] tegrarcm_v2 --chip 0x23 0 --reboot coldboot
[ 450.7697 ] MB2 version 01.00.0000
*** The target t186ref has been flashed successfully. ***
Make the target filesystem available to the device and reset the board to boot from external external.

But when I restart the device and connect to monitor there is no screen.

In the docs it says

This command stores the UUID used for the root file system partition in the file `bootloader/l4t-rootfs-uuid.txt_ext`. You may specify your own UUID by writing the UUID to this file before executing the command above.

I edited the file with random UUID. I don’t understand Is there any specific UUID should I edit?

If you would like to flash rootfs to NVMe SSD, please use initrd command. May check the section in developer guide:

Flashing Support — Jetson Linux Developer Guide documentation

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