We want to allow customers to do DFU in the field through a PC software via USB. Is there any guide to write a software equivalent to "nrfutil dfu usb-serial"?

RE: We want to allow customers to do DFU in the field through a PC software via USB. Is there any guide to write a software equivalent to "nrfutil dfu usb-serial"?

dzabel — Thu, 16 Apr 2020 12:12:08 GMT

Hi Cpeng,

you have written " have figured out how to use nrfutil to generate Bootloader with encryption key,...". I am curious about "encryption" here. As far as I see, the bootloader and the nrfutil only support signing, not encryption of the firmware to load into the device. Could you enlighten me?

Regards

Dirk

RE: We want to allow customers to do DFU in the field through a PC software via USB. Is there any guide to write a software equivalent to "nrfutil dfu usb-serial"?

Hung Bui — Mon, 24 Feb 2020 09:53:52 GMT

Hi Cpeng,

We don't have a guide for DFU master except for the DFU protocol here.

The nrfutil tool is provided with open source. You can find the source code here. You can create a clone version of the tool with other feature removed. If you want GUI interface, you can also have a look at our nRF Connect Programmer tool here.