Bangle.js App Loader returns "Upload failed, Unexpected response"

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  • As for SWD, if you have Raspberry Pico then you can make it very easily into SWD debugger by just uploading picoprobe uf2 file and then connect 3 wires (gnd,swdclk,swdio) and use openocd on Windows or Linux. Also bigger Pi works alone with its GPIO but may need a bit more tweaking to get working.

  • Hi - sorry to hear it's not working. Why did you run the code in https://www.espruino.com/Puck.js#recover­y-after-2v04-installation - had you actually installed an earlier firmware version that had effectively bricked it beforehand?

    It's an odd one - I had tested that code previously, but I bet on the device I used no code was saved in storage, so address 0x78000 was empty and the softdevice continued as normal.

    So as @fanoush says I think you'll have to connect up SWD and rewrite the firmware.

    Do you have any of these devices handy?

    • nRF52DK (easiest!)
    • Raspberry Pi Pico
    • Raspberry Pi (less easy, but possible)
    • STLink clone
    • DAPLink (costs around £10) - and pretty straightforward
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Bangle.js App Loader returns "Upload failed, Unexpected response"

Posted by Avatar for MobiTech @MobiTech

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