Failed to do DFU

[Richard Yin]

Hi, All,

We developed our device with KEIL 5, SDK15.2 and SoftDevice 6.1.1. Android App was developed on Android Nordic DFU 1.8.1 library.

When we try to upgrage the firmware of our device,
the App often halt with the error message "Starting DFU..." or "Starting bootloader..." on master control panel as the attached images.

Do you have any ideas about this problem?

Thanks and regards!

[Einar Thorsrud]

Hi Richard,

the Failed.txt log seems OK up to the point where there are no more logs. There is nothing there indicating that anything went wrong, other than that the next expected log message is missing (that the target device disconnected with status 8, which is timeout). Have you been able to add some logging on the nRF side so that we can see what is happening there? What caused it to not enter the bootloader?