What kind of GATT Characteristic is 0x1534 on BLE DFU Service?https://devzone.nordicsemi.com/f/nordic-q-a/10239/what-kind-of-gatt-characteristic-is-0x1534-on-ble-dfu-serviceHello, We use DFU Service with nrf51 with sdk 9.0.0. GATT 0x1543 characteristics can be found on DFU Serivce. But the descriptions are not found on documents. infocenter.nordicsemi.com/index.jsp We don&#39;t worry about DFU function. This is justen-USTelligent Community 13Fri, 13 Nov 2015 08:58:01 GMTRE: What kind of GATT Characteristic is 0x1534 on BLE DFU Service?https://devzone.nordicsemi.com/thread/38014?ContentTypeID=1Fri, 13 Nov 2015 08:58:01 GMT137ad170-7792-4731-bb38-c0d22fbe4515:6c2df3d4-dfd7-420f-89bd-86d1b2b3fa32R. Kawajiri<p>I understand this by reading source code.</p> <p>This is characteristics for the revision of DFU.</p> <p>Thank you</p><div style="clear:both;"></div>