jetson_nano_flash_bootloader.sh

#!/bin/bash

# run this script by executing:
#  wget https://gist.githubusercontent.com/rationalsa/803859153892a9278ad826aabb4276fe/raw/jetson_nano_flash_bootloader.sh
#  bash jetson_nano_flash_bootloader.sh

BSP=https://developer.nvidia.com/downloads/remetpack-463r32releasev73t210jetson-210linur3273aarch64tbz2
VER=32.7.3
SHA256=3e7c304b56c2c9f2ca865d560d22e8ab3d99d2e79d782342fb0fb1c4a5e7946e

BSP_FILENAME="l4t_$VER.tar.bz2"
BSP_DIR="l4t_$VER"

set -e

if [ ! -d "$BSP_DIR" ]; then
  echo "It doesn't look like we have a copy of the BSP unpacked yet..."

  if [ ! -f "$BSP_FILENAME" ]; then
    echo "Downloading the L4T $VER BSP..."
    wget "$BSP" -O "$BSP_FILENAME"
    echo "Downloading done"
  fi

  if echo "$SHA256 $BSP_FILENAME" | sha256sum -c &> /dev/null ; then
    echo "Checksum matched; the BSP archive is okay"
  else
    echo "Unexpected checksum, did the download fail?"
    exit 1
  fi

  echo "Unpacking the BSP..."
  tar xf "$BSP_FILENAME"
  mv Linux_for_Tegra "$BSP_DIR"
fi

echo
echo "This will flash the bootloader to a Jetson Nano 4GB or 2GB devkit in recovery mode"
echo "This won't work correctly on a production Jetson Nano module with an eMMC"
echo "If you're using a production Jetson Nano module, press Ctrl+C to cancel"
echo
echo "To put your Jetson Nano devkit in recovery mode:"
echo "  * bridge pins FC_REC and GND on the pin header underneath the Jetson Nano module"
echo "  * apply power"
echo "  * connect your Jetson Nano to your computer using a micro USB cable"
echo
read -p "Press enter when ready"
echo
echo "Enter your password if prompted for sudo access"

cd "$BSP_DIR"
sudo ./flash.sh jetson-nano-qspi mmcblk0p1

echo "All done"
echo "If you've installed a jumper to the FC_REC pin, remember to remove it"