https://devzone.nordicsemi.com/f/nordic-q-a/27740/how-to-not-reset-ble_app_uart-when-over-mtu_sizeHi All, The MTU_SIZE of ble_app_uart is set to 64-byte. When write data over this, let&#39;s say 80-byte, the program will be reset. I don&#39;t want to increase the MUT_SIZE to 80-byte, and I just want the SDK not reset in this case. Is there anyone coulden-USTelligent Community 13Tue, 05 Dec 2017 11:57:54 GMThttps://devzone.nordicsemi.com/thread/109464?ContentTypeID=1Tue, 05 Dec 2017 11:57:54 GMT137ad170-7792-4731-bb38-c0d22fbe4515:862d7467-1461-49f1-8961-49715755344dPetter Myhre<p>No problem :) If I answered your question I would appreciate if you would accept my answer by clicking the grey circle next to it.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/109463?ContentTypeID=1Sat, 02 Dec 2017 13:57:55 GMT137ad170-7792-4731-bb38-c0d22fbe4515:808cb8f7-b6dc-4da6-bc7f-fd0e2336fc9dvictortrue<p>Dear Petter, thank you for the kindly help.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/109462?ContentTypeID=1Fri, 01 Dec 2017 11:39:02 GMT137ad170-7792-4731-bb38-c0d22fbe4515:57f7acb4-663c-41ca-a8a9-7a5ab3abc5cePetter Myhre<p>You probably get a reset because APP_ERROR_CHECK() is called with an error somewhere. See <a href="https://devzone.nordicsemi.com/question/60125/my-device-is-freezing-and-restarting/">this</a> to figure out from where.</p> <p>If you don&#39;t want this to happen you need to handle this error and not call APP_ERROR_CHECK().</p><div style="clear:both;"></div>