Recover DK-Interface IC Firmware

RE: Recover DK-Interface IC Firmware

abhitaori — Wed, 23 Dec 2020 07:40:24 GMT

Hello Oliver,

I am facing a similar problem. Can you help me recover my board? Can you tell me how to do this?

Which are the SAM3U2C pins on the DK board? Using which software do I flash the bootloader.hex file?

RE: Recover DK-Interface IC Firmware

Oliver — Mon, 03 Jul 2017 22:46:36 GMT

Thank you very much - it worked!

RE: Recover DK-Interface IC Firmware

Stian Røed Hafskjold — Mon, 03 Jul 2017 13:39:13 GMT

Maybe you've somehow managed to overwrite the bootloader. The source code is found here: github.com/.../CMSIS-DAP. Here you have a precompiled hex file: bootloader.hex

Flash the bootloader.hex using the SAM3U2C debug pins. Then power cycle the kit while holding down the reset button. It should now boot up in bootloader mode. (LED flashing, and BOOTLOADER drive shows up on computer). Then you can drag the J-Link FW (J-Link OB-SAM3U128-V2-NordicSemi 170213.bin) over to the BOOTLOADER drive to flash the new FW. Finally, power cycle the kit.

RE: Recover DK-Interface IC Firmware

Oliver — Sat, 01 Jul 2017 18:43:19 GMT

Hey,

unfortunately nothing happens during the power cycling with pressed reset button..,

RE: Recover DK-Interface IC Firmware

kmorris — Thu, 29 Jun 2017 21:42:26 GMT

Hi Oliver -

I've totally done that too. If you turn off the little power switch on the board and hold the reset button down while turning it back on, does it register now on the USB as BOOTLOADER?

If so, you can use the USB interface to re-flash the Nordic Bootloader on, which you can get at the links mentioned in this question. Just drag and drop the J-Link OB-SAMxxxxx.bin into the BOOTLOADER folder.

If not, hopefully a Nordic employee can pop on here and help you recover it.