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Update Sensor Firmware

Grillo Cloud can update a sensor's firmware over the air (OTA). You choose a target version, and the sensor downloads and installs it the next time it checks in.

Only project owners and admins can start an update.

Which sensors support OTA​

SensorOTA from Grillo Cloud
Grillo Pulse on firmware 1.xYes
Grillo OneYes
Current Grillo Pulse, Cellular and Ethernet (firmware 2.x)Not yet. Grillo updates these units for you; contact support.

The sensor's current version is in the Firmware column of the sensor table.

Before you update​

  • The sensor must be online. An offline sensor takes the update when it next connects.
  • Make sure it has stable power. Do not unplug it during the update.
  • On a cellular sensor, check that signal strength is steady. The download uses the sensor's data connection.
  • Update one sensor first and confirm it comes back before updating the rest.

Start an update​

  1. Open Sensors and select the sensor.
  2. Select Edit.
  3. In Firmware Version, choose the target version. The list shows the versions published for that sensor type; the installed one is marked current.
  4. Select Update Device.
  5. In Confirm OTA Version Update, select Confirm Update.

The sensor receives the target version at its next health check-in, about a minute later. It downloads the firmware, installs it, and restarts.

Check the result​

Wait a few minutes, then refresh Sensors. The update worked when:

  • The sensor is online again, and
  • The Firmware column shows the target version.

A reboot also appears in the sensor's connection history.

If the update does not complete​

  • Firmware column unchanged and sensor online: the sensor may still be downloading, especially on a weak cellular link. Give it more time before trying again.
  • Sensor offline after the update: check power and connectivity on site, then follow the troubleshooting guide for the sensor.
  • Still on the old version after an hour: contact support with the Device ID, the current and target versions, and the time you started the update.

You cannot set the target to the version the sensor already runs.