https://devzone.nordicsemi.com/f/nordic-q-a/13710/is-ota-updates-a-reason-to-chosse-bluetooth-smartHi, Question regarding blog from Thomas S&#248;derholm ( blog.nordicsemi.com/.../which-technology-should-i-choose-to-connect-my-wearable-device-to-a-phone): Can&#39;t you do update over-the-air with Bluetooth Classic, Zigbee or Thread, etc? Thomas identifiesen-USTelligent Community 13Mon, 09 May 2016 14:42:47 GMThttps://devzone.nordicsemi.com/thread/52394?ContentTypeID=1Mon, 09 May 2016 14:42:47 GMT137ad170-7792-4731-bb38-c0d22fbe4515:6e21032d-8847-406c-9852-9bc1277441edJohn<p>I can only speculate that he is highlighting Nordic&#39;s bootloader that is provided as part of the SDK as an advantage. I don&#39;t recall any mention in the Bluetooth Specs to a bootloading service or stack layer. You can do OTA updates with Zigbee, I&#39;ve done a proprietary one on that technology.</p><div style="clear:both;"></div>