= OTA - Over The Air Update

This is a large topic with lots of variables.

On the Gateworks SBCs, or single board computers, there are several pieces to be aware of:
 * GSC Firmware
 * Bootloader
 * RootFS (!OpenWrt, Ubuntu, etc)

Read below for more details.

A basic approach that is often utilized is creating several partitions in the filesystem, one being the active partition and another being the updated partition. 

== GSC Firwmare 

The GSC, or Gateworks system controller has it's own firmware. 
This can be updated from the Linux command line, and thus scripted for OTA udpates.
Read more here: [wiki:gsc#GSCUpdates]

== Bootloader
This can typically be updated from the Linux command line. 

Read more here: 
 * Ventana: [wiki:ventana/bootloader#u-boot.imgThemainbootloaderapplication]
 * Newport: [wiki:newport/firmware#UpdatingU-Bootbootloader]
 * Venice: [wiki:venice/firmware#Updatingjustthebootfirmware]

== RootFS

=== Ubuntu

Ubuntu typically uses the standard apt-get package management system for updates. 

=== OpenWrt
See [wiki:OpenWrt/sysupgrade]

=== Buildroot 
See SWUpdate: [wiki:buildroot#SWUpdate]

== SWUpdate

Note SWUpdate is a software package / tool very universal and can likely be used on many rootfs / operating systems (not just buildroot). Read more here: [wiki:buildroot#SWUpdate]

== Reference Links

Other links that can be useful to review:
 * [https://www.embedded.com/ota-updates-for-embedded-linux-part-2-a-comparison-of-off-the-shelf-update-systems/]

== Third Party Software

There are many third party software providers out there, that have '''NOT''' been tested on Gateworks products, so please proceed at your own risk:
 * [http://mender.io]