0> app: Inside main 0> app: In nrf_bootloader_init 0> nrf_dfu_settings: Calling nrf_dfu_settings_init()... 0> nrf_dfu_flash: Initializing nrf_fstorage_nvmc backend. 0> nrf_dfu_settings: Settings OK 0> app: Enter nrf_bootloader_fw_activate 0> app: No firmware to activate. 0> app: Enter nrf_dfu_app_is_valid 0> app: CRC check of app failed. Return 1 0> app: DFU mode requested via button. 0> nrf_bootloader_wdt: WDT is not enabled 0> app: in weak nrf_dfu_init_user 0> app: timer_stop (0x20000024) 0> app: timer_activate (0x20000024) 0> app: Entering DFU mode. 0> app: Initializing transports (found: 1) 0> nrf_dfu_serial_uart: serial_dfu_transport_init() 0> nrf_dfu_serial_uart: serial_dfu_transport_init() completed 0> nrf_dfu_flash: Initializing nrf_fstorage_nvmc backend. 0> app: Enter main loop 0> app: timer_stop (0x20000024) 0> app: timer_fire (0x20000024) 0> app: Inactivity timeout. 0> app: Resetting bootloader. 0> nrf_dfu_settings: Backing up settings page to address 0xFE000. 0> nrf_dfu_settings: Destination settings are identical to source, write not needed. Skipping. 0> lid 0> app: CRC check of app failed. Return 1 0> nrf_dfu_settings: No additional data erased 0> nrf_dfu_settings: Backing up settings page to address 0xFE000. 0> nrf_dfu_settings: Destination settings are identical to source, write not needed. Skipping. 0> app: Running nrf_bootloader_app_start with address: 0x00001000 0> app: Disabling interrupts. NVIC->ICER[0]: 0x0 0> app: running irq table set 0> app: After running irq table set 0> app: Inside main 0> app: In nrf_bootloader_init 0> nrf_dfu_settings: Calling nrf_dfu_settings_init()... 0> nrf_dfu_flash: Initializing nrf_fstorage_nvmc backend. 0> nrf_dfu_settings: Settings OK 0> app: Enter nrf_bootloader_fw_activate 0> app: No firmware to activate. 0> app: Enter nrf_dfu_app_is_valid 0> app: CRC check of app failed. Return 1 0> nrf_dfu_settings: No additional data erased 0> nrf_dfu_settings: Backing up settings page to address 0xFE000. 0> nrf_dfu_settings: Destination settings are identical to source, write not needed. Skipping. 0> app: Running nrf_bootloader_app_start with address: 0x00001000 0> app: Disabling interrupts. NVIC->ICER[0]: 0x0 0> app: running irq table set 0> app: After running irq table set 0> app: Inside main 0> app: In nrf_bootloader_init 0> nrf_dfu_settings: Calling nrf_dfu_settings_init()... 0> nrf_dfu_flash: Initializing nrf_fstorage_nvmc backend. 0> nrf_dfu_settings: Settings OK 0> app: Enter nrf_bootloader_fw_activate 0> app: No firmware to activate. 0> app: Enter nrf_dfu_app_is_valid 0> app: CRC check of app failed. Return 1 0> nrf_dfu_settings: No additional data erased 0> nrf_dfu_settings: Backing up settings page to address 0xFE000. 0> nrf_dfu_settings: Destination settings are identical to source, write not needed. Skipping. 0> app: Running nrf_bootloader_app_start with address: 0x00001000 0> app: Disabling interrupts. NVIC->ICER[0]: 0x0 0> app: running irq table set 0> app: After running irq table set 0> app: Inside main 0> app: In nrf_bootloader_init 0> nrf_dfu_settings: Calling nrf_dfu_settings_init()... 0> nrf_dfu_flash: Initializing nrf_fstorage_nvmc backend. 0> nrf_dfu_settings: Settings OK 0> app: Enter nrf_bootloader_fw_activate 0> app: No firmware to activate. 0> app: Enter nrf_dfu_app_is_valid 0> app: CRC check of app failed. Return 1 0> app: DFU mode requested via button. 0> nrf_bootloader_wdt: WDT is not enabled 0> app: in weak nrf_dfu_init_user 0> app: timer_stop (0x20000024) 0> app: timer_activate (0x20000024) 0> app: Entering DFU mode. 0> app: Initializing transports (found: 1) 0> nrf_dfu_serial_uart: serial_dfu_transport_init() 0> nrf_dfu_serial_uart: serial_dfu_transport_init() completed 0> nrf_dfu_flash: Initializing nrf_fstorage_nvmc backend. 0> app: Enter main loop