Hi,
I am trying to set up a bootloader using the example code given in SDK 15.3.0. I am working with the nrf52840 dk and have been using the same device with the same project using the SDK15.2.0 and it has been working fine. However, I have not been able to run the dfu example in 15.3.0. I keep getting the error shown in the picture below after I ran:
nrfutil dfu serial -pkg app.zip -p COM3
The device acts like it is working properly as the leds are lit up as in dfu mode, but the serial port does not seem to be opening.
I ran nrf Connect programmer to see what the device was downloading and as you can see in th picture below, the device seems to download it as an application (green) with the mbr (orange). I haven't made any changes to the example code so I am quite confused as to why this is happening. I do not know if this is the reason why I cannot open the COM3 port, but this was the only difference I saw between this code and the SDK 15.2.0 example code that I tested and works just fine.
Any help is greatly appreciated!
