Flashing ATmega32u4 boards via webUSB

Development Libraries
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Hi everyone,
This is my first post, so please feel free to redirect me if I'm posting this thread in the wrong section.

Goal:
My goal is to create a website that others can use to flash any ATmega32u4 boards directly via the browser with pre-compiled binaries.

What I've learned so far:

  1. I've confirmed I am able to connect my Adafruit Feather 32u4 via the browser using the webUSB library from [u]https://github.com/webusb/arduino[/u]
  2. I've read through some of the underlying issues of the 32u4 boards: here and here
  3. I found this repo: GitHub - devanlai/webdfu: WebUSB Device Firmware Upgrade example but I haven't yet tested it with the Adafruit Feather 32u4

Questions:

  • Has anyone successfully flashed an ATmega32u4 board via webUSB protocol?
  • Any pointers or hints on how I can get to my goal of flashing via the browser?
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