https://devzone.nordicsemi.com/f/nordic-q-a/69792/zigbee-ota-data-request-problemDear friend， I want to implement ota data packet request through my own code. In the \examples\zigbee\ota\client example, line 876-1268 of zb_zcl_ota_upgrade.h finds the api requested by ota data packet. Can I call these APIs?en-USTelligent Community 13Wed, 23 Dec 2020 07:52:45 GMThttps://devzone.nordicsemi.com/thread/286407?ContentTypeID=1Wed, 23 Dec 2020 07:52:45 GMT137ad170-7792-4731-bb38-c0d22fbe4515:8372e3ac-7e3e-405f-99b8-474493e16df8Marte Myrvold<p>Hi,</p> <p>You should be able to use the APIs in the&nbsp;<a href="https://infocenter.nordicsemi.com/topic/sdk_tz_v4.1.0/group___z_b___z_c_l___o_t_a___u_p_g_r_a_d_e.html">ZCL OTA Upgrade cluster</a>, yes. I would recommend looking at the <a href="https://infocenter.nordicsemi.com/topic/sdk_tz_v4.1.0/zigbee_example_ota_client.html">OTA Upgrade Client example</a>&nbsp;to see how OTA is done there in order to understand how to implement it yourself.</p> <p>Best regards,</p> <p>Marte</p><div style="clear:both;"></div>