ERROR: FOTA download reverted to the previous version nRF9160.

[haohv6]

Dear Nordic engineer.

I am using nrf9160.

I follow the instructions to download Fota using AWS upload file update.bin.

After the device has downloaded the file and receives the FOTA_DOWNLOAD_EVT_FINISHED event, the device reboots and runs to the new version.

But after a while, the device reboots and reverted to the old version before updating.

What do I need to do to fix this?

I use ncs 1.4.0 and firmware 1.2.3

Thank you.

# FOTA library
CONFIG_FOTA_DOWNLOAD=y

# DFU Target
CONFIG_DFU_TARGET=y

# Application Upgrade support
CONFIG_BOOTLOADER_MCUBOOT=y

[Håkon Alseth]

Hi,

 

Are you confirming the image in your new firmware?

That can be done by calling this function:

https://github.com/nrfconnect/sdk-nrf/blob/master/samples/nrf9160/aws_fota/src/main.c#L588-L591

 

If that does not work, can you ensure that the overall flash layout is equal on both your original image and new image?

This can be done by setting static partitions: http://developer.nordicsemi.com/nRF_Connect_SDK/doc/1.4.99-dev1/nrf/scripts/partition_manager/partition_manager.html#configuring-static-partitions

 

It essentially means that you take the original_project/build-folder/partitions.yml and copy this to the root of your new-application/ folder, and then reconfigure/recompile your new-application again.

 

Kind regards,

Håkon

[haohv6]

Hi Håkon

Sorry for reply late, 

I added the function "boot_write_img_confirmed()" after get event "FOTA_DOWNLOAD_EVT_FINISHED"

I have also added PM_STATIC_YML_FILE in CMakeList.txt

#
# Copyright (c) 2018 Nordic Semiconductor
#
# SPDX-License-Identifier: LicenseRef-BSD-5-Clause-Nordic
#

cmake_minimum_required(VERSION 3.8.2)
find_package(Zephyr REQUIRED HINTS $ENV{ZEPHYR_BASE})
# include($ENV{ZEPHYR_BASE}/../nrf/cmake/boilerplate.cmake)
# include($ENV{ZEPHYR_BASE}/cmake/app/boilerplate.cmake NO_POLICY_SCOPE)
project(vtracker)

set(PM_STATIC_YML_FILE
  ${CMAKE_CURRENT_SOURCE_DIR}/configuration/${BOARD}/pm_static.yml
  )

# NORDIC SDK APP START
target_sources(app PRIVATE src/main.c)
# NORDIC SDK APP END

# Include application events and configuration headers

I use the board nrf9160dk_nrf9160ns

After I download it, the device will run to the new version ok. At the 3rd minute, I turn off the device and turn it on again, it doesn't work anymore, the screen shows the above revert message, please help me.

Here is my pm_static file

EMPTY_0:
  address: 0xc000
  placement:
    before:
    - mcuboot_pad
  region: flash_primary
  size: 0x4000
app:
  address: 0x1c200
  region: flash_primary
  size: 0x68e00
bsdlib_sram:
  address: 0x20010000
  placement:
    after:
    - spm_sram
    - start
  region: sram_primary
  size: 0x10000
mcuboot:
  address: 0x0
  placement:
    before:
    - mcuboot_primary
  region: flash_primary
  size: 0xc000
mcuboot_pad:
  address: 0x10000
  placement:
    align:
      start: 0x8000
    before:
    - mcuboot_primary_app
  region: flash_primary
  size: 0x200
mcuboot_primary:
  address: 0x10000
  orig_span: &id001
  - mcuboot_pad
  - spm
  - app
  region: flash_primary
  sharers: 0x1
  size: 0x75000
  span: *id001
mcuboot_primary_app:
  address: 0x10200
  orig_span: &id002
  - app
  - spm
  region: flash_primary
  size: 0x74e00
  span: *id002
mcuboot_secondary:
  address: 0x85000
  placement:
    after:
    - mcuboot_primary
    align:
      start: 0x1000
  region: flash_primary
  share_size:
  - mcuboot_primary
  size: 0x75000
nvs_storage:
  address: 0xfa000
  placement:
    before:
    - end
  region: flash_primary
  size: 0x6000
otp:
  address: 0xff8108
  region: otp
  size: 0x2f4
spm:
  address: 0x10200
  inside:
  - mcuboot_primary_app
  placement:
    before:
    - app
  region: flash_primary
  size: 0xc000
spm_sram:
  address: 0x20000000
  inside:
  - sram_secure
  placement:
    after:
    - start
  region: sram_primary
  size: 0x10000
sram_primary:
  address: 0x20020000
  region: sram_primary
  size: 0x20000
sram_secure:
  address: 0x20000000
  orig_span: &id003
  - spm_sram
  region: sram_primary
  size: 0x10000
  span: *id003

Thanks

[Håkon Alseth]

haohv6 said:

I added the function "boot_write_img_confirmed()" after get event "FOTA_DOWNLOAD_EVT_FINISHED"

You should call this function in your new firmware to verify the newly downloaded image.

Call it in the top of main, like done in aws_fota.

 

Kind regards,

Håkon

[haohv6]

Thank you, It works very well.