How to reflash/un-brick my nRF-DK?

[Mark Aufflick]

Hi all,

I have an nRF-DK (the new one that's mbed compatible: developer.mbed.org/.../)

I have managed to completely brick it by copying the wrong file onto the BOOTLOADER volume (the one that mounts when you power-on while holding the reset button down).

It doesn't flash the LD5 LED at all, with the reset button down or not, with or without battery and/or usb power, and no USB device is presented at all.

I'm hoping there's a way with a segger or something else I can re-flash the bootloader, but can't find any mention in the docs - hoping someone has some suggestions?!

Thanks,

Mark.

[Hung Bui]

Hi Mark,

It's pretty strange that you managed to brick the board.

Could you send us the binary file that caused the issue so we can test here ?

If the bootloader is really corrupted, you can try to directly erase and program the ATMEL chip using a Segger Jlink programmer via JTAG connection. You may need to use the Jlink Needle adapter to connect to the connector right under the mbed logo.

Then program the chip using the provided binary files for Segger and mbed.