https://devzone.nordicsemi.com/f/nordic-q-a/86658/bootloader-wdt-resetHi, I enable the watchdog in the application image, then call soft reset to enter the bootloader, the bootloader execution is also normal, until the watchdog is reset. My problem is similar to this and it solves it too, but I&#39;m wondering why is thisen-USTelligent Community 13Wed, 06 Apr 2022 12:40:11 GMThttps://devzone.nordicsemi.com/thread/362085?ContentTypeID=1Wed, 06 Apr 2022 12:40:11 GMT137ad170-7792-4731-bb38-c0d22fbe4515:6fddf5f1-a51b-4c9d-b745-3c0c659bb03dSimonr<p>Hi</p> <p>I think what you&#39;re seeing is the bug in the bootloader explained by my colleague<a href="https://devzone.nordicsemi.com/f/nordic-q-a/67267/watchdog-reset-during-bootloader-dfu/275769#275769"> Einar in this thread</a>. Please try triggering the start task as he suggests and see if that clears the issue.</p> <p>Best regards,</p> <p>Simon</p><div style="clear:both;"></div>