DFU update with custom application

RE: DFU update with custom application

Aleksander Nowakowski — Wed, 14 May 2025 20:39:53 GMT

Hi, are you testing on iOS or Android? Did you try the other system?
All the links I find are related to cleaning and rebuilding, e.g. https://www.omi.me/blogs/flutter-errors/missingpluginexception-in-flutter-causes-and-how-to-fix

I tried to follow the method 'update', but it works fine for me. Why would only this method fail? Check if you're not using the same name in some context that may cause issues.

RE: DFU update with custom application

naiaraa_72 — Thu, 08 May 2025 09:34:49 GMT

I commented the update method and it does not give any other errors, that's the only error that there is. I also tried to download the library and call it locally but that did not work either. Also I do not get the error with any of the other methods that I am calling from the mcumgr_flutter package, it is only happening with the update method

RE: DFU update with custom application

Aleksander Nowakowski — Thu, 08 May 2025 08:25:19 GMT

If you comment out the the block where you call the 'update' method, does it compile, or you get an error reg some other method?

I'm not familiar with Flutter, tbh. This looks for me like some configuration issue with adding dependency to the library...

RE: DFU update with custom application

naiaraa_72 — Thu, 08 May 2025 08:23:09 GMT

Yes, I am using 0.4.2

RE: DFU update with custom application

Aleksander Nowakowski — Thu, 08 May 2025 08:17:22 GMT

Are you using version 0.4.2 of mcumgr_flutter library?

RE: DFU update with custom application

naiaraa_72 — Thu, 08 May 2025 07:55:08 GMT

I realized that in the post I copied the wrong error, when doing the firmware update the error I get is the following: "Error during firmware update: MissingPluginException(No implementation found for method update on channel mcumgr_flutter/method_channel)". I will also add below the code of how I did the firmware update. Thanks in advance!

try {

// Load firmware data

final byteData = await rootBundle.load('assets/dfu_application.zip');

final firmwareBytes = byteData.buffer.asUint8List();

final image = mcumgr.Image(

image: 0,

data: firmwareBytes,

);

// Initialize manager

final updateManagerFactory = mcumgr.FirmwareUpdateManagerFactory();

final updateManager = await updateManagerFactory.getUpdateManager(device.remoteId.str);

// Setup streams

final updateStream = updateManager.setup();

updateManager.updateStateStream?.listen((event) {

print("Update State: $event");

if (event == mcumgr.FirmwareUpgradeState.success) {

ScaffoldMessenger.of(context).showSnackBar(

SnackBar(content: Text('Firmware update completed successfully!')),

);

}

});

updateManager.progressStream.listen((event) {

print("Progress: ${event.bytesSent} / ${event.imageSize} bytes sent");

});

updateManager.logger.logMessageStream

.where((log) => log.level.rawValue > 1)

.listen((log) => print("Log: ${log.message}"));

// Configuration

const config = mcumgr.FirmwareUpgradeConfiguration(

eraseAppSettings: true,

firmwareUpgradeMode: FirmwareUpgradeMode.testAndConfirm,

);

// Perform update

await updateManager.update([image], configuration: config);

} catch (e) {

print("Error during firmware update: $e");

ScaffoldMessenger.of(context).showSnackBar(

SnackBar(content: Text('Firmware update failed: $e')),

);

}

RE: DFU update with custom application

Aleksander Nowakowski — Thu, 08 May 2025 07:40:18 GMT

I see in the logs, that the service found on the device is SMP Service:

SMP Service (8d53dc1d-1db7-4cd3-868b-8a527460aa84)
- SMP Characteristic [N WNR] (da2e7828-fbce-4e01-ae9e-261174997c48)

This means, that your device is based on nRF Connect SDK, not nRF5 SDK, and `mcumgr_flutter` is the right library, if you're using Flutter.

There is no method "getPlatformVersion" in this library.

RE: DFU update with custom application

naiaraa_72 — Thu, 08 May 2025 07:02:24 GMT

Good morning!
I think that the SDK is in fact nRF5 SDK. I got the log of doing the DFU operation on nRF Connect for Android and I have attached the txt with it.

devzone.nordicsemi.com/.../8015.nRF_5F00_Connect_5F00_log.txt

RE: DFU update with custom application

Aleksander Nowakowski — Wed, 07 May 2025 19:28:42 GMT

Hello!

If your device is based on nRF5 SDK and you are using Legacy DFU (SDK v4.3-11) or Secure DFU (SDK v12-17.x) you should use `nordic_dfu` package. The `mcumgr_flutter` supports SMP protocol, which is used in nRF Connect SDK and Zephyr. The fact that you say, that your device is put to bootlaoder mode suggests that you're using nRF5 SDK, in some version.

Could you please paste here logs from nRF Connect for Android gathered during successful DFU operation?