nrfutil dfu very slow compared to nrf connect dfu

[bds]

Using the same connectivity firmware, a dfu update using nrfutil takes about four times as long as the same update using nrf connect. I have to setup dfu updating in a production setup and need a command line driven dfu process. Any options to speed up nrfutil, or alternatives to nrfutil?

[bds]

Hi, I used the same nrf board on both computers (PCA10040). The Segger software and all relevant drivers are exactly the same on both computers. I also checked the COM port driver settings in the registry. Again everything is exactly the same.

I have seen similar issues with virtual COM ports over USB (FTDI) in other projects. Different USB chipsets caused very different throughput through the serial port.The performance differences seemed to depend a lot on which functions were used to read from and write to the serial port.

[Victor]

I do have the same problem you describe: The time which an update takes on a computer is not predictable. It varies form 3 to 6 min (updating SD, BL and APP). Did you find any issues/ workarounds?