https://devzone.nordicsemi.com/f/nordic-q-a/123262/nrf5415-mpsl-assert-107-291Hi, I am running openthread on the NRF54l15 DK. Whenever I am debugging and hit the breakpoint or pause the program, then on resumption my app crashes. How Can I debug while running openthread? [00:00:43.616,918] &lt;err&gt; mpsl_init: MPSL ASSERT: 107, 291en-USTelligent Community 13Tue, 29 Jul 2025 07:52:37 GMThttps://devzone.nordicsemi.com/thread/543869?ContentTypeID=1Tue, 29 Jul 2025 07:52:37 GMT137ad170-7792-4731-bb38-c0d22fbe4515:3c43338f-028e-4ac2-b69e-04227e2de41aPriyanka<p>Hi,</p> <p><a href="https://docs.nordicsemi.com/bundle/ps_nrf54L15/page/debug.html#ariaid-title8:~:text=RESETREAS%20is%20set.-,Real%2Dtime%20debug,-The%20device%20supports">Real-time debugging</a> is supported for the nRF54L15.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/543860?ContentTypeID=1Tue, 29 Jul 2025 07:30:29 GMT137ad170-7792-4731-bb38-c0d22fbe4515:62d65361-8b48-4a01-a6a8-0dc2f4b1ada9dnej<p>Is there any way to debug nRF while the radio is running?</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/543712?ContentTypeID=1Mon, 28 Jul 2025 10:13:25 GMT137ad170-7792-4731-bb38-c0d22fbe4515:c27d6c7a-bf1e-49bb-8791-5ca743aa0567Priyanka<p>Hi,</p> <p>You are&nbsp;running OpenThread on an nRF54L15 working under Zephyr and hit the same MPSL ASSERT 107, 291 after resuming from a breakpoint. So uou must avoid stopping the chip when OpenThread or radio activity is ongoing because halting the nRF during time‑critical MPSL operation causes missed radio/timing events, breaking internal MPSL state.&nbsp;</p> <p>This is also mentioned in<a href="https://devzone.nordicsemi.com/f/nordic-q-a/122586/nrf54l15-hits-mpsl-assert-107-291-on-ot-co-proc-sample"> this ticket</a>.</p> <p>-Priyanka</p><div style="clear:both;"></div>