View source for Nvidia Jetson: Flashing Custom Firmware

= Flashing Standard Firmware =
== SDKManager ==
SDKManager is available only on Linux, and can be installed here: https://developer.nvidia.com/sdk-manager
# Start up the SDKManager
# Put the Jetson into recovery mode. For the AGX, this can be done by pressing the recovery button while powering on the device. For the Nano and NX, however, a jumper will be required. 
# Connect the Target Jetson to the host device and ensure that the target device is recognized.
# Follow the instructions on the application, choosing configurations as necessary.
 

= Flashing Custom Firmware (For Jetson 36.3) =
== Pre-requisites == 
# Please install required packages with the command <code>sudo apt install build-essential bc && sudo apt install build-essential bc</code>.
=== Downloading the Toolchain ===
# Download the Toolchain binaries located in <code>https://developer.nvidia.com/embedded/jetson-linux</code>.
# From there, <code>mkdir $HOME/l4t-gcc</code>, <code>cd $HOME/l4t-gcc</code> and extract the installed toolchain into this newly created directory using the <code>tar</code> command.

== Downloading the Kernel ==
# Follow steps 1 to 3 as mentioned in Flashing Standard Firmware.
# Proceed to the second step of the SDKManager, where the respective individual dependencies and Jetson Images are listed and are to be installed. Proceed with the installation.
# When prompted to actually flash the Jetson, opt to skip. This will install the <code>nvidia</code> folder on your home directory, in which the <code>rootfs</code>, <code>kernel</code>, and <code>bootloader</code> are located.
# Navigate to <code>nvidia</code> and <code>cd</code> through its subdirectories, until <code>Linux for Tegra</code> is reached.
# Inside <code>Linux for Tegra</code>, <code>cd</code> into the <code>sources</code> folder. It should be unpopulated with the exception of some bash scripts. Run the <code>source_sync.sh</code> script and when asked to specify the release tag of the downloadable sources, enter <code>jetson_36.3</code>. This will install the sources for the respective Jetson version as necessary. To find the release tag of future iterations of the Jetson firmware, please refer to its respective release notes.
# Once sources have been synced, the <code>sources</code> directory should now be populated with the required files.