nRF52840-DK is bricked

[sble]

My PC does not recognize the DK when I pluged it. I did try with different cables and also on differente PCs, but no USB device appears, and allways the LED1 light of NRF52840 flashing.

I have hold IF BOOT/RESET button while powering on the board, but it did not enter bootloader mode - a new USB storage drive not appear.

How can I do to repair the NRF52840DK or display the USB device in my PC？

[Simonr]

Please go through our DK troubleshooting guide to see if that helps your DK get back on track. Make sure that all the switches are in the correct places and that if the current measurement solder bridge is cut (SB40), make sure that pin header P22 is shorted with a jumper cable.

Best regards,

Simon