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What is a Tuya device shadow? What is the relationship between a device shadow and OTA?

Last Updated on：2023-10-24 07:21:39

A device shadow is the projection of a device in the cloud, which also contains the device firmware information. The relationship between a device shadow and OTA is as follows:

When a device is activated, the device reports the firmware information to the cloud. Then, the cloud creates a shadow for the device.

When detecting firmware updates, the cloud compares the firmware version of the device shadow with the available version to determine whether an update is required.

When pushing the update to the device, the cloud delivers the new firmware to the device by using multiple message exchanges. For more information, see the OTA protocol.

After the device is updated, it reports the latest firmware information to the cloud, and the cloud updates the device shadow.