Using SWD to flash and also have DFU bootloader installed ?

[Roger Clark]

Is there a way that I can still flash via SWD, but also have the DFU bootloader installed ?

The moment, as soon as I install the DFU bootloader, I have to upload the app via DFU because the application CRC is not being set in the flash when I program it using SWD

I know I could modify the bootloader code and remove the CRC check, but I don't really want to do that. I'd prefer a method where I could generate a HEX file to flash via SWD that also updated the bit of flash that contains the CRC

[Nguyen Hoan Hoang]

You can use mergehex provided by Nordic to merge all in one hex then flash it or you can use the IDAPnRFProg with the IDAP-Link and parallel program multiple boards at once.

[Nguyen Hoan Hoang]

The IDAPnRFProg was specifically design for this. It takes care of the CRC for you so the DFU works. I believe mergehex does the same.