Dear Nordic Support Team,
I'm currently working with your Flutter library, mcumgr_flutter version 0.4.1, to implement Device Firmware Update (DFU) functionality. However, I am encountering an issue where the DFU process fails with the following error:
Uncaught exception in binary message listener Wrong magic number (found 0x20031208, expected 0x96F3B83D or 0x96F3B83C) at io.runtime.mcumgr.image.McuMgrImageHeader.fromBytes(McuMgrImageHeader.java:66)
This suggests that my firmware files may not be packaged correctly for use with your library.
I am only testing it with android
I have both a .bin file and a .dat file in my DFU package, along with a manifest.json. My current manifest.json looks like this:
{
"format-version": 1,
"time": 1234567890,
"files": [
{
"file": "002-175-0-02 tj-s140 Small Engine Application.bin",
"image_index": "0"
},
{
"file": "002-175-0-02 tj-s140 Small Engine Application.dat",
"image_index": "1"
}
]
}
I suspect that the issue might be related to incorrect packaging or an incompatible tool version. Could you please advise which version of Nordic's tools I should use to package my firmware files so that they are compatible with mcumgr_flutter? Any specific guidelines or recommendations regarding the use of .dat and .bin files with the Flutter library would be very helpful.
With android native no.nordicsemi.android:dfu:2.7.0
It works when i use the same bin and dat file and the manifest is :
{
"manifest": {
"application": {
"bin_file": "002-175-0-02 tj-s140 Small Engine Application.bin",
"dat_file": "002-175-0-02 tj-s140 Small Engine Application.dat"
}
}
}
Thank you for your support.
Best regards,
