Sec bootloader can not success boot appliction after flashing device

Question

Hi, 
 I use SDK16 ble sec-bootloader and merged application image together followed by the guide of the website 
 nrfutil settings generate --family NRF52 --application app_flies_52840.hex --application-version-string 0.0.2 --bootloader-version 1 --bl-settings-version 1 settings_s140.hex
mergehex.exe --merge s140_nrf52_7.0.1_softdevice.hex dfu_ble_bootloader.hex --output fw_sd_boot.hex
mergehex.exe --merge app_flies_52840.hex fw_sd_boot.hex settings_s140.hex --output fw_all_s140.hex

nrfjprog.exe --family NRF52 --eraseall
nrfjprog.exe --family NRF52 --verify --program fw_all_s140.hex 
nrfjprog.exe --family NRF52 --reset
 
 unfortunalately , after flahsing fw_all_s140.hex to device, device still boot into DFU mode. 
 How I build a really release image file to factory? 
 
 BR.

Amanda Hsieh · Accepted Answer

Hi Guorong, 
 You should use --family NRF52840 for nRF52840 while generating the bootloader setting. 
 -Amanda H.

atrons · Answer

D:\work\synsor\res\OTA>nrfutil settings generate --family NRF52840 --application app_flies_52840.hex --application-version-string 0.0.2 --bootloader-version 1 --bl-settings-version 1 settings_s13
2.hex

Note: Generating a DFU settings page with backup page included.
This is only required for bootloaders from nRF5 SDK 15.1 and newer.
If you want to skip backup page generation, use --no-backup option.

Generated Bootloader DFU settings .hex file and stored it in: settings_s132.hex

Bootloader DFU Settings:
* File: settings_s132.hex
* Family: NRF52840
* Start Address: 0x000FF000
* CRC: 0xFDCBA735
* Settings Version: 0x00000001 (1)
* App Version: 0x00000002 (2)
* Bootloader Version: 0x00000001 (1)
* Bank Layout: 0x00000000
* Current Bank: 0x00000000
* Application Size: 0x00016C9C (93340 bytes)
* Application CRC: 0x58CBA51D
* Bank0 Bank Code: 0x00000001
* Softdevice Size: 0x00000000 (0 bytes)
* Boot Validation CRC: 0x00000000
* SD Boot Validation Type: 0x00000000 (0)
* App Boot Validation Type: 0x00000000 (0)


D:\work\synsor\res\OTA>mergehex.exe --merge dfu_ble_bootloader_P101_dbg.hex settings_s132.hex --output test.hex
Parsing input hex files.
Merging files.
ERROR: The hex files cannot be merged since there are conflicts.

 
 Got an error with merge hex files

Sec bootloader can not success boot appliction after flashing device

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