L4TLauncher: Attempting Direct Boot
EFI stub: Booting Linux Kernel...
EFI stub: Using DTB from configuration table
EFI stub: Loaded initrd from LINUX_EFI_INITRD_MEDIA_GUID device path
EFI stub: Exiting boot services and installing virtual address map...
Both of your log stop at UEFI.
Could you help to refer to the following instruction to flash the devkit with SDKM?
Install Jetson Software with SDK Manager :: NVIDIA SDK Manager Documentation