Secure DFU over UART issue

[Sridhar Jonnavittula]

Hi,

I have followed sequence in http://infocenter.nordicsemi.com/index.jsp?topic=%2Fcom.nordic.infocenter.sdk5.v15.0.0%2Fsdk_app_serial_dfu_bootloader.html&cp=4_0_0_4_3_4 

It says programmed 100% but example not running. Can you specify reason?

Working scenario nrfconnect image when programmed UART bootloader and example image normally

Not working scenario nrfconnect image when programmed UART bootloader and example by giving command nrfutil dfu serial -pkg dfu1.zip -p COM3

Seems softdevice is getting over written

Thanks

[Hung Bui]

I don't think we have document on it. The MBR code is not open. But what exactly you want to do with the MBR parameter page ?

Usually that page is used to store information about the location of the new softdevice/ bootloader and which command the MBR need to do on the next reset, just in case the DFU process got interrupted by a power failure for example.