Can't go to DFU mode

[tsgan]

I flashed nrf52840 usb dongle via SWD and now it can't go to DFU mode even if I press reset.

Green and blue leds are constantly blinking. How can I go to DFU mode in that case? Are there any methods?

Any hints, helps would be much appreciated.

[tsgan]

No worries. I flashed original bootloader and now everything works fine.