Programming the dongle

[BhupalPruthvi]

Hi,

I bought the nrf52840 MDK USB dongle, I am trying to follow the instructions to put the dongle in the dfu mode to flash a custom binary by holding the usr/reset button and plugging in the usb port, but it never flashes red for me, it has always been green and the programmer app of the NRF desktop does not recognize as a valid device.

I use the nrf52840 dongle from the Nordic and it works fine but I press a button different than the usr/reset which is not available in the makerdiary dongle. Please assist me on this.

Thanks -Pruthvi