How to Flash Multiple Nvidia Jetson Orin Nano and NX Modules Efficiently

Issue Overview

Users of the Nvidia Jetson Orin Nano and NX modules have reported challenges when attempting to flash multiple devices simultaneously. The primary symptoms include:

• Difficulty in efficiently flashing approximately 100 modules, as the standard method requires a one-to-one flashing process.
• Users are seeking a solution that enables concurrent flashing to save time and resources.

The issue arises during the setup phase, specifically when trying to deploy multiple modules in a single operation. The hardware involved includes various Jetson Orin Nano and NX models, and the software context involves using the Linux for Tegra (L4T) tools for flashing. Users have expressed frustration over the inefficiency of the current process, which can significantly impact project timelines and resource allocation.

Possible Causes

Several potential causes for the difficulties in flashing multiple modules have been identified:

• Hardware Limitations: The requirement for all devices to be of the same hardware revision can lead to complications if any devices differ.

• Configuration Errors: Incorrect settings or parameters during the flashing process may prevent successful mass flashing.

• Driver Issues: Incompatibilities with drivers or outdated software could hinder the flashing capabilities.

• Environmental Factors: Power supply issues or inadequate USB connections may affect the ability to flash multiple devices simultaneously.

• User Errors: Misunderstandings regarding command usage or device preparation can lead to unsuccessful attempts.

Each of these factors could contribute to the observed difficulties, making it essential for users to follow precise instructions and ensure compatibility.

Troubleshooting Steps, Solutions & Fixes

To address the issue of flashing multiple Jetson modules, users can follow these comprehensive troubleshooting steps and solutions:

1. Prepare for Mass Flashing:

   • Ensure all Jetson devices are of identical hardware revisions.
   • Connect all devices to the flashing host via USB.

2. Generate Massflash Package:

   • Use the following command to create a massflash package:

     sudo BOARDID=<BOARDID> FAB=<FAB> BOARDSKU=<BOARDSKU> BOARDREV=<BOARDREV> \
     ./tools/kernel_flash/l4t_initrd_flash.sh --no-flash --massflash <x> --network usb0 jetson-xavier-nx-devkit-emmc mmcblk0p1
     

   • Replace <x> with the maximum number of devices you wish to flash concurrently (e.g., 5).

3. Put Devices into RCM Mode:

   • Ensure all connected Jetson devices are in Recovery Mode (RCM).

4. Execute Flashing Command:

   • Run the following command to initiate the flashing process:

     sudo ./tools/kernel_flash/l4t_initrd_flash.sh --flash-only --massflash <x> --network usb0
     

   • Optionally, add --showlogs to view logs during the process.

5. Optimize Flashing Process:

   • Use the --keep option for subsequent flashes:

     sudo ./tools/kernel_flash/l4t_initrd_flash.sh --flash-only --massflash <x> --network usb0 --keep
     

   • For even faster operations, utilize --reuse in later attempts:

     sudo ./tools/kernel_flash/l4t_initrd_flash.sh --flash-only --massflash <x> --network usb0 --reuse
     

6. Increase I/O Priority:

   • To enhance performance, run with high I/O priority using ionice:

     sudo ionice -c 1 -n 0 ./tools/kernel_flash/l4t_initrd_flash.sh --flash-only --network usb0 --massflash <x>
     

7. Documentation and Updates:

   • Refer to the official Nvidia documentation for any updates on drivers or firmware that may impact flashing capabilities.

8. Testing Different Configurations:

   • If issues persist, test with fewer devices connected or different USB ports/cables to isolate potential hardware problems.

By following these steps, users should be able to successfully flash multiple Nvidia Jetson Orin Nano and NX modules efficiently. If problems continue, further investigation into specific hardware configurations or software versions may be necessary.