How to Reset and Reflash Nvidia Jetson Nano

Issue Overview

The user has encountered a login issue with their Nvidia Jetson Nano after not using it for an extended period (4 years). The system automatically logged in initially, but when attempting to upgrade, it requested a password that the user couldn’t remember. After multiple failed attempts, the system logged the user out. The user now wants to reset the Jetson Nano to its default state and start fresh.

Possible Causes

1. Forgotten user credentials: Due to the long period of inactivity, the user has forgotten the password set up during the initial configuration.

2. Expired or corrupted user session: The automatic login might have been using cached credentials that are no longer valid after attempting system upgrades.

3. System updates or changes: Over the 4-year period, system updates or changes might have altered the login behavior or security settings.

4. Outdated software: The long period of inactivity might have left the system significantly out of date, potentially causing conflicts with newer software or security protocols.

Troubleshooting Steps, Solutions & Fixes

The most straightforward solution to this issue is to reflash the SD card with a fresh image of the Jetson Nano operating system. This process will effectively reset the device to its default state. Here’s how to do it:

1. Download the latest Jetson Nano Developer Kit SD Card Image from the official NVIDIA website:
   https://developer.nvidia.com/embedded/downloads

2. Prepare a microSD card (32GB UHS-1 minimum recommended) and a way to connect it to your computer (e.g., microSD card reader).

3. Download and install a tool for writing image files to SD cards, such as Etcher or Win32 Disk Imager.

4. Use the chosen tool to write the downloaded image file to the microSD card. This process will erase all existing data on the card.

5. Once the writing process is complete, safely eject the microSD card from your computer.

6. Insert the newly flashed microSD card into your Jetson Nano.

7. Power on your Jetson Nano. It should boot into the fresh installation.

8. Follow the initial setup process to configure your new system, including setting a new username and password that you can remember.

9. After the setup is complete, it’s recommended to immediately update your system:

   sudo apt update
   sudo apt upgrade
   

10. Consider setting up a password manager or securely storing your credentials to avoid similar issues in the future.

By following these steps, you’ll effectively reset your Jetson Nano to its default state, allowing you to start fresh with a new installation and updated software. This process will resolve the login issues and provide you with a clean slate for your projects.