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  • Case ID: 127581
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Erased J-link firmware from interface MCU

Anesh

I was trying to update J-link firmware (using link [https://devzone.nordicsemi.com/question/170895/nrf52832-jlink-stop-working-after-entering-bootloader-mode/] ) into interface MCU (MCU between PC and nRF52 uC responsible for downloading code into nRF52 uC) but accidentally erased bootloader firmware. Now, nRFGo Studio is not detecting segger device Id. Led next to interface MCU is not blinking. No mass Storage device is appearing on my PC.

Please suggest me how to fix this. Thanks!

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    Have you tried to open SEGGER J-Link Configurator from J-Link SW package you installed earlier (typically with some Nordic tools)? There are basically two options how to update/flash this MCU:

    • by using that "IF BOOT/RESET" button during the reset procedure and than uploading FW binary to USB mass storage.
    • by using SEGGER tools such as J-Link Configurator.

    If none of them work then you might want to use another PC/USB port/USB cable and hope that now the board will work either with SEGGER J-Link driver or at least will appear as USB mass storage. If not then you might need to buy a new one.

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  • 0

    Have you tried to open SEGGER J-Link Configurator from J-Link SW package you installed earlier (typically with some Nordic tools)? There are basically two options how to update/flash this MCU:

    • by using that "IF BOOT/RESET" button during the reset procedure and than uploading FW binary to USB mass storage.
    • by using SEGGER tools such as J-Link Configurator.

    If none of them work then you might want to use another PC/USB port/USB cable and hope that now the board will work either with SEGGER J-Link driver or at least will appear as USB mass storage. If not then you might need to buy a new one.

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