20221026 __ NRU-52S ES2 / ES3

With the following procedures, you can recover NRU-52S ES2 / ES3 to our latest stable status.

Step A. Preparation

• Prepare a Host Machine (Linux x86 with Ubuntu 18.04)

• Install NVIDIA SDKManager for JetPack4.6.1 and Xavier NX module, and you will have a L4T folder.

• Put NRU-50 into recovery mode.

  • The recovery button is next to the terminal block of the DC input.

  • Press down the recovery button

  • Power on NRU-50

  • Wait 5 seconds with the recovery button remains pressed

  • Release recovery button

• Connect NRU-50 with the Host Machine by a micro USB to USB cable

Step B-1. Flash with Neousys Pre-built System Image

The NRU NAS is not disclosed in the public domain. Please contact your sales representative to get access.

• Download NRU-52S pinmux and device tree files, e.g., nru50_0408_1635.tar.gz from NRU NAS. Then, extract the file at L4T folder by tar zxvf nru50_0408_1635.tar.gz

• Download the latest system image from NRU NAS

• Put the system image into L4T/bootloader and rename the downloaded system image as system.img

• On Host Machine, input the following command to flash the whole system with Neousys' pre-built system image and NRU-50's device tree.

export L4T="$HOME/nvidia/nvidia_sdk/JetPack_4.6.1_Linux_JETSON_XAVIER_NX_TARGETS/Linux_for_Tegra/"
cd $L4T
sudo ./flash.sh -r -d nru50.dtb nru50 mmcblk0p1