https://devzone.nordicsemi.com/f/nordic-q-a/93949/can-not-enter-maintenance-mode-to-update-bootloader-on-a-nrf52-dkI am tring to update the DK bootloader by entering the maintenance mode by pressing the reset button while plugging in the DK, but the board does not show on my PC any help to erase the firmware on the board by using any hardware jumper? Or any thoughtsen-USTelligent Community 13Thu, 17 Nov 2022 12:03:48 GMThttps://devzone.nordicsemi.com/thread/396188?ContentTypeID=1Thu, 17 Nov 2022 12:03:48 GMT137ad170-7792-4731-bb38-c0d22fbe4515:3e8b1d95-9d51-4790-9cb3-0812a516a5a2Hung Bui<p>Hi Ahmed,&nbsp;</p> <p>Could you let me know which DK you are testing with and which version of the board ? Newer board doesn&#39;t have the bootloader to enter &quot;maintenance mode&quot;</p><div style="clear:both;"></div>