MY CHIP is NRF52840, EVB is PCA10056
SDK: nRF5_SDK_15.0.0_a53641a
bootloader use secure DFU example: \nRF5_SDK_15.0.0_a53641a\examples\dfu\secure_bootloader\pca10056_ble
use IDE:Keil 5 MDK ARM
looklike this subject:https://devzone.nordicsemi.com/f/nordic-q-a/19068/uploading-application-and-bootloader-application-not-starting
I merged 3 hex files(softdevice.hex, bootloader.hex, application.hex) and uploaded this hex file to nrf52840 DK.
After uploading hex file to DK, although there is application hex file in memory,my DK is still in DFU mode.
util use DFU upload new application.
I have try this subject solve method.
But bootloader_settings.c is not in my secure_bootloader example.
There is also no uint8_t m_boot_settings[CODE_PAGE_SIZE].
