https://devzone.nordicsemi.com/f/nordic-q-a/77565/main-app-not-starting-from-within-bootloaderMy goal was to make a bootloader, that, when not requested, still goes do DFU mode for 5 seconds, so that there is always an option to get to the bootloader after boot, even when the application is too broken to request it. My issue is that in myen-USTelligent Community 13Mon, 19 Jul 2021 15:00:00 GMThttps://devzone.nordicsemi.com/thread/320758?ContentTypeID=1Mon, 19 Jul 2021 15:00:00 GMT137ad170-7792-4731-bb38-c0d22fbe4515:b1848734-8953-4f15-a0fd-89ae25a99d4eDaniel Dakhno<p>While I havn&#39;t figured out how to start into the application from the bootloader directly I am now using a workaround</p> <p>by checking&nbsp;<span>NRF_POWER</span><span>-&gt;</span><span>GPREGRET in the bootloader, activating dfu for two seconds in case of&nbsp;GPREGRET being 0 and incrementing&nbsp;GPREGRET.</span></p> <p><span>After two seconds, if there has been no connection to dfu, I do NVIC_SystemReset, thus rebooting the bootloader and checking&nbsp;GPREGRET again, which is 1 by the time of the seconds boot.</span></p> <p><span></span></p> <p><span>In case of&nbsp;GPREGRET being 1 the bootloader skips all the dfu stuff and directly starts the application.</span></p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/320755?ContentTypeID=1Mon, 19 Jul 2021 14:55:16 GMT137ad170-7792-4731-bb38-c0d22fbe4515:819e6962-3c32-4e58-a9c7-92c833c9e8c4Hakon<p>Hello,</p> <p>Nordic is short on staff, so you will need to wait a little bit until the right expertise comes along. It will hopefully not take too long. Thanks for your patience.</p><div style="clear:both;"></div>