As the firmware upgrade relies on the network connection between the device and your selected network, please try a few more times when it fails the first time. If the problem persists, please follow through the guide below,

  1. Delete the device from your account.
  2. Take another phone, enable its hotspot.
  3. Connect the hotspot WiFi with your phone. Re-add the model, note that you have to enter the hotspot WiFi info correctly during adding process.
  4. After adding it successfully, upgrade the firmware.
  5. After upgrading successfully. Delete your device from your account.
  6. Switch your WiFi to your previous home WiFi.
  7. Re-add the device to App via the home WiFi.

Once you change the WiFi, you’ll need to delete and re-add. Or the device can’t send data to the server successfully.