OTA Failed！Failed to Mcumgr DFU: Invalid header magic number

RE: OTA Failed！Failed to Mcumgr DFU: Invalid header magic number

spring.liu — Mon, 17 Oct 2022 12:22:33 GMT

smp_svr I run and it is ok ,I tried to transplant main.c and bluetooth.c .I hope it will work

RE: OTA Failed！Failed to Mcumgr DFU: Invalid header magic number

Einar Thorsrud — Mon, 17 Oct 2022 10:42:35 GMT

We do, that is the example I referred to under <SDK>/zephyr/samples/subsys/mgmt/mcumgr/smp_svr/. See documentation here: SMP Server Sample. This sample works out of the box. You use it in the exact same way as you do with 2.0.0, just remember to use the configuration overlay file for Bluetooth when you build it.

RE: OTA Failed！Failed to Mcumgr DFU: Invalid header magic number

spring.liu — Mon, 17 Oct 2022 10:39:54 GMT

Do not work ！ if you have the OTA example in ncs1.5.1 ,you can send to me

RE: OTA Failed！Failed to Mcumgr DFU: Invalid header magic number

Einar Thorsrud — Mon, 17 Oct 2022 10:31:51 GMT

[quote user="spring.liu"]it is new problem[/quote]

Good to know. This is important information.

[quote user="spring.liu"]As mentioned above,Migration steps inNCS2.0.0 is ok what different with NCS1.5.1[/quote]

There has been a lot of changes between these (they are 5 releases apart, ignoring bug-fix release), but the fundamentals remain mostly the same. For details, you should refer to the SMP SVR sample for the release you are using.

[quote user="spring.liu"]Add DFU support to your application - Software - nRF Connect SDK guides - Nordic DevZone (nordicsemi.com) it is ok ？ where is SMP Server Sample path？ [/quote]

The principles are OK, but there are minor differences. The sample path is: <SDK>/zephyr/samples/subsys/mgmt/mcumgr/smp_svr/

RE: OTA Failed！Failed to Mcumgr DFU: Invalid header magic number

spring.liu — Mon, 17 Oct 2022 10:24:15 GMT

```
it is new problem
```
As mentioned above,Migration steps inNCS2.0.0 is ok what different with NCS1.5.1
Add DFU support to your application - Software - nRF Connect SDK guides - Nordic DevZone (nordicsemi.com) it is ok ？ where is SMP Server Sample path？

RE: OTA Failed！Failed to Mcumgr DFU: Invalid header magic number

Einar Thorsrud — Mon, 17 Oct 2022 10:15:30 GMT

Hi,

This bin looks good in this regard. Are you sure you get the "Invalid header magic number" error with this file? Or is it so that you get another error when you changed to (what looks like) the correct file?

Note that you can refer to the SMP Server Sample to see a working DFU example. I would recommend that you use that as a reference, and perhaps also test that sample first to check that your procedure is correct. Then, you can copy-paste configurations and a few things from main.c and bluetooth.c into your application in order to use it there.

RE: OTA Failed！Failed to Mcumgr DFU: Invalid header magic number

spring.liu — Mon, 17 Oct 2022 09:21:14 GMT

devzone.nordicsemi.com/.../123.zip this is the program

RE: OTA Failed！Failed to Mcumgr DFU: Invalid header magic number

spring.liu — Mon, 17 Oct 2022 09:19:33 GMT

devzone.nordicsemi.com/.../app_5F00_update.zipthis is the .bin

RE: OTA Failed！Failed to Mcumgr DFU: Invalid header magic number

Einar Thorsrud — Mon, 17 Oct 2022 09:15:00 GMT

Hi,

The only way I am able to reproduce this is by using an invalid image. Can you clarify which image file you use with nRF Connect? You should use the file called "app_update_bin", and this is found under build/zephyr.

RE: OTA Failed！Failed to Mcumgr DFU: Invalid header magic number

spring.liu — Mon, 17 Oct 2022 09:05:37 GMT

and how to open the OTA LOG

CONFIG_BT_DFU_SMP_LOG_LEVEL=4

CONFIG_BT_DEBUG_LOG =y

CONFIG_LOG_DEFAULT_LEVEL=4

this is only

RE: OTA Failed！Failed to Mcumgr DFU: Invalid header magic number

spring.liu — Mon, 17 Oct 2022 02:51:02 GMT

I use NCS 1.5.1 uart example (ncs1.5.1\nrf\samples\bluetooth\peripheral_uart) add the ota, but fail

Steps are as follows

1. add this code to prj.conf

CONFIG_BOOTLOADER_MCUBOOT=y

CONFIG_MCUMGR=y

CONFIG_MCUMGR_CMD_IMG_MGMT=y

CONFIG_MCUMGR_CMD_OS_MGMT=y

CONFIG_BT_L2CAP_TX_MTU=252

#CONFIG_BT_BUF_ACL_RX_SIZE=256 this in NCS2.0.0 is ok but ncs1.5.1 without it so CONFIG_BT_ACL_RX_COUNT replace it

CONFIG_BT_ACL_RX_COUNT=256

CONFIG_MCUMGR_SMP_BT=y

CONFIG_MCUMGR_SMP_BT_AUTHEN=n

CONFIG_SYSTEM_WORKQUEUE_STACK_SIZE=2304

2.add this code to main.c

I used this same approach successfully in NCS2.0 。but NCS1.5.1 without CONFIG_BT_BUF_ACL_RX_SIZE and OTA failed。 the reson is MCUmgr disconnecting

RE: OTA Failed！Failed to Mcumgr DFU: Invalid header magic number

Einar Thorsrud — Wed, 12 Oct 2022 12:55:17 GMT

Hi,

The error refers to the magic image number that is used in MCUboot (0x96f3b83d), and that is not found as expected in the image. Where does this .bin file come from? Are you sure it is a valid update image?