Reflashing NRU-220S with JetPack 5.0.2

Prepare a Host Machine

• Prepare a host machine with Ubuntu 20.04 or Ubuntu 18.04

  • An x86 computer with at least 8GB memory

  • Install NVIDIA SDK Manager [link]

  • By NVIDIA SDK Manager, download and Install the JetPack 5.0.2 for AGX Orin

  • You will get a L4T folder, e.g., $HOME/nvidia/nvidia_sdk/JetPack_5.0.2_Linux_JETSON_AGX_ORIN_TARGETS/Linux_for_Tegra

  • Contact your sales representative to get the access to NRU NAS, and get the latest NRU-220S file package (e.g., nru220_2022-12-05_1539.tar.gz), then put it in your L4T folder.

  • Uncompressed the NRU-220S file package via sudo tar zxvf nru220_2022-12-05_1539.tar.gz

  • You may also create your default user name and password with sudo ./tools/l4t_create_default_user.sh -u nvidia -p nvidia -a

13MB

nru220_2022-12-05_1539.tar.gz

Open

Put NRU-220S into Recovery Mode

• Boot NRU-220S into recovery mode by:

  • Hold down the recovery button underneath the power button

  • Press the power button

  • Wait for 5 second

  • Release the recovery button

• Connect the host machine with NRU-220S via a USB type A (on Host) to type C (on NRU-220s) cable

• If NRU-220S is ready to be flashed, you will see AGX Orin listed as a USB device after entering lsusb

Bus 001 Device 079: ID 0955:7223 NVIDIA Corp.

Flash NRU-220S

First Flash / Full Flash (with system image rebuilt)

For the first flash, please enter the following command to re-generate system image based on NRU-220s file package

time sudo ./flash.sh -d nru220.dtb nru220 mmcblk0p1

Flash only Device Tree

Please refer to the Two Ways to Update Device Tree to change your default device tree address before flashing.

time sudo ./flash.sh -r -k A_kernel-dtb -d nru220.dtb nru220 mmcblk0p1