https://devzone.nordicsemi.com/f/nordic-q-a/65007/bootloader-requires-3-resets-to-run-applicationHello all, I&#39;ve run into a weird problem that hopefully someone has a clue. My environment: - PCA10040A, nRF52832 - sdk 17.0 - softdevice s132_nrf52_7.0.1_softdevice.hex - using a buttonless BLE bootloader - building with Segger SES The problem: I builden-USTelligent Community 13Thu, 20 Aug 2020 11:00:47 GMThttps://devzone.nordicsemi.com/thread/265518?ContentTypeID=1Thu, 20 Aug 2020 11:00:47 GMT137ad170-7792-4731-bb38-c0d22fbe4515:6167ab61-3aeb-4c3e-96e1-016ab489196bAmanda Hsieh<p>Hi Richard,&nbsp;</p> <p><span>Thank you for reporting this issue.&nbsp;</span><span>I will report to the internal again.</span></p> <p><span>-Amanda H.</span></p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/265423?ContentTypeID=1Wed, 19 Aug 2020 22:42:03 GMT137ad170-7792-4731-bb38-c0d22fbe4515:a82e9a95-1c76-4f70-aa37-2b8f9b8b984aRichard D.<p>After hours spent diving into the bootloader, I discover a bug in the bootloader that has been known about for at least 2 years now.&nbsp; Somewhat disappointing that Nordic hasn&#39;t found time to implement the simple fix in all the SDK releases since then.&nbsp; Bug and fix are described here:</p> <p><a href="https://devzone.nordicsemi.com/f/nordic-q-a/38048/bug-in-how-bootloader-treats-gpregret">https://devzone.nordicsemi.com/f/nordic-q-a/38048/bug-in-how-bootloader-treats-gpregret</a></p> <p><a href="https://devzone.nordicsemi.com/f/nordic-q-a/39477/dfu-enter-check">https://devzone.nordicsemi.com/f/nordic-q-a/39477/dfu-enter-check</a></p> <p>Richard</p> <p></p><div style="clear:both;"></div>