Did I brick my microcontrollers (Sea Picro RP2040) somehow? The bootloader is in ROM, so shouldn't be possible?

This page summarizes the projects mentioned and recommended in the original post on /r/ErgoMechKeyboards
Qmk qmk-firmware Dfu Atmel Bootloadhid

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  • sea-picro

    Sea-Picro is a RP2040 based board in the Arduino Pro Micro form factor.

    • I ordered a Chocofi kit that included two Sea Picro microcontrollers and am running into issues getting the firmware I want installed and working.

  • qmk_toolbox

    A Toolbox companion for QMK Firmware

    • When I first plugged them in, my Mac (running 13.1 Ventura) recognized them as a USB storage device. I was trying to use the QMK toolbox to flash the firmware onto them, not realizing that I needed to drag and drop a .uf2 file instead of trying to flash a .hex file.

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NOTE: The number of mentions on this list indicates mentions on common posts plus user suggested alternatives. Hence, a higher number means a more popular project.

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