USB DFU dosn' update Firmware

[Marbae]

Hi

I've started the USB DFU example. I flash my device and use the hello World example as described in the readme.

I can upload the app using dfu-util. But after reset its starts the dfu firmware. How can i see whats going on?

dfu-util --alt 1 --download merged.hex 

thank you for help

[Amanda Hsieh]

Hi, 

I would suggest you start from this course https://academy.nordicsemi.com/courses/nrf-connect-sdk-intermediate/lessons/lesson-9-bootloaders-and-dfu-fota/topic/exercise-4-dfu-over-usb/ 

Regards,
Amanda H.

[Marbae]

I do that this way, I've to had enable ACM_CDC?

[Amanda Hsieh]

Yes, if you want to get the log via ACM_CDC. Otherwise, you can check the default UART port.