Over the Air (OTA) Update
Trimble IoT offers the ability to send over-the-air firmware updates to one or all devices registered within an IoT Group. Although OTA updates were designed to update device firmware, you can use them to send any file types to one or more devices registered with AWS IoT. When you send updates over the air, you must digitally sign them so that the devices that receive the files can verify they haven’t been tampered with en route.
Firmware can be downloaded by devices using two protocols:
- MQTT
- HTTPS
About firmware
Firmware is a software program on the hardware device which performs functions like basic input/output tasks and offers necessary instructions for the device to communicate with other computing devices. A Firmware update improves the functionality and features of your device. It can provide fixes to any performance issues that may occur.
Any firmware update file should be uploaded to Data Ocean as a prerequisite and later you are expected to provide the download URL to IoT for further processing. And its mandatory to digitally sign the same so that devices can verify the file once received at its end.
The following are the important for OTA updates:
