BLE Sample code fails to pair after unpairinghttps://devzone.nordicsemi.com/f/nordic-q-a/127606/ble-sample-code-fails-to-pair-after-unpairingWe are running some sample code on the nrf54l15 mcu, specifically: /modules/lib/memfault-firmware-sdk/examples/nrf-connect-sdk/nrf5/memfault_demo_app We can connect and pair successfully (with the nRF Memfault iOS app) but then when we unpair on theen-USTelligent Community 13Tue, 31 Mar 2026 16:41:45 GMTRE: BLE Sample code fails to pair after unpairinghttps://devzone.nordicsemi.com/thread/564325?ContentTypeID=1Tue, 31 Mar 2026 16:41:45 GMT137ad170-7792-4731-bb38-c0d22fbe4515:10768b68-9b33-4071-b354-4a64771fbd60jthmp<p>Makes sense, how can I handle it automatically?</p><div style="clear:both;"></div>RE: BLE Sample code fails to pair after unpairinghttps://devzone.nordicsemi.com/thread/564229?ContentTypeID=1Mon, 30 Mar 2026 02:21:35 GMT137ad170-7792-4731-bb38-c0d22fbe4515:a4cfb532-4b95-400d-8c2a-35c6ae9c2d5dmaryproven<p>Hello, you have a stale bond on the device while the phone has deleted it, so pairing fails with BT_SECURITY_ERR_AUTH_REQUIREMENT. Calling bt_unpair() works because it clears that mismatch&mdash;but you can handle it automatically instead of forcing a retry.</p><div style="clear:both;"></div>