case about nRF52820 uart dfu

peter.min said:

1. I modified the following macro definition, and the bootloader did not report any more errors

FLOAT_ABI_SOFT   xNRF52  xNRF52_PAN_74 

Does that mean that your bootloader is starting up as expected? (running to main()?)

What does nrfutil say when you try to update the image?

BR,
Edvin

Hi Edvin,

The following data appears

Thank you for all your assistance.
Kind regards,
Peter.Min

I can't see what arguments you are using in your nrfutil call. Can you try it without your script that you sent in the last reply?
e.g.
"nrfutil dfu usb-serial ..."

This error looks to come from nrfutil, and not the bootloader. I guess that one of the nrfutil arguments are not populated properly, so I suggest you get it working with a raw command before you add your long script that abstracts everything away.

BR,

Edvin