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Recovering a bricked nrf52832 devkit

Gauthier

I entered bootloader mode (holding reset while powering up) and flashed an erroneous bin file by copying it to the mounted device in my file manager.

I suppose that to recover, I should reenter bootloader mode, and flash the appropriate bin/hex.

My question is: where can I get this file? Is it specific to this individual, since it has a serial number?

Parents
  • 0 in reply to Gauthier

    A procedure for unbricking DK boards


    Try the following when the nrfjprog commands can no longer detect a DK board
    In preparation to unbrick the DK

    goto to the URL
    www.nordicsemi.com/.../Download

    and download the file J-Link OB-SAM3U128-V2-NordicSemi 170724.bin


    All of the following is subjective as to how bd the board is screwd up.
    1.  Only have the JLink usb connector inserted
    2.    Press the reset button and verify that the DK board went into the BOOTLOADER mode by looking at the win explorer window on lower left
        If not keep doing it.  
            Also sometimes it requires that you start with both usb connectors inserted    
                    And then slide the Voltage source switch from USB back to VDD
                    And I have even used the Segger r command and write the registers.  Can't seem to find that URL on nrf dev zone
                    
    3.  Unplug the CDC ACM usb cable
    4.  Power on the DK    
            You should then see the JLINK device in the win explorer window
            If not start over at step 1

    5.  Several options from here.
    6.  flash the mbr
    7.  flash bootloader if that is what you are working on
    8.  flash the softdevice if not using SES
    9.    flash your app

    Your app should then work properly
    It seems that the 833 DK was more difficult than the 832 and 840

Reply
  • 0 in reply to Gauthier

    A procedure for unbricking DK boards


    Try the following when the nrfjprog commands can no longer detect a DK board
    In preparation to unbrick the DK

    goto to the URL
    www.nordicsemi.com/.../Download

    and download the file J-Link OB-SAM3U128-V2-NordicSemi 170724.bin


    All of the following is subjective as to how bd the board is screwd up.
    1.  Only have the JLink usb connector inserted
    2.    Press the reset button and verify that the DK board went into the BOOTLOADER mode by looking at the win explorer window on lower left
        If not keep doing it.  
            Also sometimes it requires that you start with both usb connectors inserted    
                    And then slide the Voltage source switch from USB back to VDD
                    And I have even used the Segger r command and write the registers.  Can't seem to find that URL on nrf dev zone
                    
    3.  Unplug the CDC ACM usb cable
    4.  Power on the DK    
            You should then see the JLINK device in the win explorer window
            If not start over at step 1

    5.  Several options from here.
    6.  flash the mbr
    7.  flash bootloader if that is what you are working on
    8.  flash the softdevice if not using SES
    9.    flash your app

    Your app should then work properly
    It seems that the 833 DK was more difficult than the 832 and 840

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