How Firmware Updates (FUOTA) Work

Dryad devices, including Sensors and Gateways, are continuously improved through firmware updates that enhance performance, reliability, and add new features. All firmware updates are performed remotely by Dryad through our Firmware Update Over-The-Air (FUOTA) process. Customers cannot update devices manually.

Why We Update Firmware

Firmware updates ensure your devices operate at their highest standard. Updates may include:

• Performance improvements

• Stability and reliability enhancements

• Security patches

• New features or optimizations

• Compatibility updates for future Dryad services

These improvements help maintain long-term device health and ensure your deployment performs consistently and efficiently.

Who Performs Firmware Updates?

All firmware updates are executed exclusively by Dryad using FUOTA (Firmware Update Over-The-Air).
Customers do not need to initiate, manage, or schedule updates.

Old Firmware Banner

When a device is running an older firmware version, the system may display an "Firmware update requires” banner.

What If a Device Cannot Be Updated?

If a sensor cannot be updated, it is almost always due to poor connectivity between the sensor and the nearest gateway. Common causes include:

• Very low RSSI or poor SNR

• Excessive distance to the gateway

• Obstructions such as terrain, vegetation, or buildings

• Sensor placed too low or in a shielded location

• Gateway offline or out of range

How to Identify This in the Site Management App

Sensors that fail to receive updates typically show consistently low RSSI in the Connectivity column.

If the signal is too weak to receive firmware packets, the update will not complete. In most cases, relocating the sensor to an area with stronger connectivity allows Dryad to retry and complete the update successfully.