Update how-to-update-over-the-air.md

Author: iamunc

articles/azure-percept/how-to-update-over-the-air.md

@@ -11,6 +11,9 @@ ms.custom: template-how-to, ignite-fall-2021
 
 # Update Azure Percept DK over-the-air
 
+>[!CAUTION]
+>**Over-the-air (OTA) update is no longer supported. To keep your Azure Percept DK software update-to-date, please refer to [Update the Azure Percept DK over a USB-C cable connection](./how-to-update-via-usb.md).**
+
 Follow this guide to learn how to update the OS and firmware of the carrier board of your Azure Percept DK over-the-air (OTA) with Device Update for IoT Hub.
 
 ## Prerequisites