https://devzone.nordicsemi.com/f/nordic-q-a/22581/unable-to-pair-nrf51-dongle-and-the-dk-using-nrf-connectWhenever I hit pair to pair the nrf51 dongle with the DK, I keep receiving the error line: Authentication failed with status BLE_GAP_SEC_STATUS_PAIRING_NOT_SUPP I read in another post that I have to delete some bonds, but how would I do that ? Isen-USTelligent Community 13Wed, 07 Jun 2017 09:27:32 GMThttps://devzone.nordicsemi.com/thread/88830?ContentTypeID=1Wed, 07 Jun 2017 09:27:32 GMT137ad170-7792-4731-bb38-c0d22fbe4515:124b1067-fd7a-48a1-971a-af5114941c9eHung Bui<p>@Klaus: Which firmware on the nRF51 are you testing with ? Please try to test with ble_app_proximity example.</p><div style="clear:both;"></div>