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  • you flashed a hex file intended for a different board. The Rock is an nrf52840, which has more SRAM, flash and thus different addresses for DFU entry points, etc. So your board is in an unknown state, you'll need a full build of Magic3 with bootloader and soft device as a .hex file. Are you set up to do your own builds?

    BTW: the Rock is not an officially supported Espruino board, you won't find any firmware for it here.


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