FOTA without external flash: Irrecoverable error: flash write failed: 12

[Kedar Sharma]

Hello Team,

I am trying to change the Lesson 9 Exercise 5 nrf5340_both_sol sample to use internal flash for FOTA. The code builds successfully. I have changed the pm_static.yml file to adapt to my another project in which I want to implement FOTA without external flash. I have commented out the code in mcuboot.conf and mcuboot.overlay files and I have removed 

SB_CONFIG_PM_EXTERNAL_FLASH_MCUBOOT_SECONDARY in sysbuild.conf file. The sample build was completed and flashed to the DK. 

When I tried to flash the new build with some code changes using nRF Device Manager andriod app I get the follow error: 
*** Booting MCUboot v2.1.0-dev-4594a8693738 ***
*** Using nRF Connect SDK v2.8.0-a2386bfc8401 ***
*** Using Zephyr OS v3.7.99-0bc3393fb112 ***
I: Starting bootloader
W: Cannot upgrade: slots have non-compatible sectors
I: Image index: 1, Swap type: none
I: Bootloader chainload address offset: 0xc000
�E: JEDEC id [ff ff ff] expect [c2 28 17]
*** Booting My Application v2.9.0-580302f04f35 ***
*** Using nRF Connect SDK v2.8.0-a2386bfc8401 ***
*** Using Zephyr OS v3.7.99-0bc3393fb112 ***
BBB Starting Bluetooth Peripheral LBS example
I: 2 Sectors of 4096 bytes
I: alloc wra: 0, f18
I: data wra: 0, 144
I: HW Platform: Nordic Semiconductor (0x0002)
I: HW Variant: nRF53x (0x0003)
I: Firmware: Standard Bluetooth controller (0x00) Version 254.63788 Build 573996906
I: No ID address. App must call settings_load()
Bluetooth initialized
I: Identity: F9:87:99:29:1A:81 (random)
I: HCI: version 6.0 (0x0e) revision 0x204e, manufacturer 0x0059
I: LMP: version 6.0 (0x0e) subver 0x204e
Advertising successfully started
Connected
Security changed: 10:EC:81:F9:10:CE (public) level 4
I: Image index: 0, Swap type: none
I: Image index: 1, Swap type: none
E: Failed to open flash area ID 2: -2
I: Image index: 0, Swap type: none
E: Irrecoverable error: flash write failed: 12

SDK and Toolchain - v2.8.0
nRF5340DK

EMPTY_0:
  address: 0xfe000
  end_address: 0x100000
  placement:
    after:
    - settings_storage
  region: flash_primary
  size: 0x2000
app:
  address: 0xc200
  end_address: 0x7be00
  region: flash_primary
  size: 0x6fc00
mcuboot:
  address: 0x0
  end_address: 0xc000
  placement:
    align:
      end: 0x1000
    before:
    - mcuboot_primary
  region: flash_primary
  size: 0xc000
mcuboot_pad:
  address: 0xc000
  end_address: 0xc200
  placement:
    align:
      start: 0x4000
    before:
    - mcuboot_primary_app
  region: flash_primary
  size: 0x200
mcuboot_primary:
  address: 0xc000
  end_address: 0x7be00
  orig_span: &id001
  - app
  - mcuboot_pad
  region: flash_primary
  size: 0x6fe00
  span: *id001
mcuboot_primary_1:
  address: 0x0
  device: nordic_ram_flash_controller
  end_address: 0x40000
  region: ram_flash
  size: 0x40000
mcuboot_primary_app:
  address: 0xc200
  end_address: 0x7be00
  orig_span: &id002
  - app
  region: flash_primary
  size: 0x6fc00
  span: *id002
mcuboot_secondary:
  address: 0x7be00
  end_address: 0xbc000
  placement:
    align:
      start: 0x4
  region: flash_primary
  size: 0x40200
mcuboot_secondary_1:
  address: 0xbc000
  end_address: 0xfc000
  region: flash_primary
  size: 0x40000
otp:
  address: 0xff8100
  end_address: 0xff83fc
  region: otp
  size: 0x2fc
pcd_sram:
  address: 0x20000000
  end_address: 0x20002000
  placement:
    after:
    - start
  region: sram_primary
  size: 0x2000
ram_flash:
  address: 0x40000
  end_address: 0x40000
  region: ram_flash
  size: 0x0
rpmsg_nrf53_sram:
  address: 0x20070000
  end_address: 0x20080000
  placement:
    before:
    - end
  region: sram_primary
  size: 0x10000
settings_storage:
  address: 0xfc000
  end_address: 0xfe000
  placement:
    align:
      start: 0x4000
    before:
    - end
  region: flash_primary
  size: 0x2000
sram_primary:
  address: 0x20002000
  end_address: 0x20070000
  region: sram_primary
  size: 0x6e000

[Sigurd Hellesvik]

Hi,

Try to apply the following patch: https://github.com/nrfconnect/sdk-mcuboot/pull/397, and then build without pm_stastic.yml but with SB_CONFIG_PM_EXTERNAL_FLASH_MCUBOOT_SECONDARY=n

Regards,
Sigurd Hellesvik