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Flash Tool

A very simple macOS app that lets you flash an .img file (or a zip with an .img inside) to an SD card or USB stick.

Screenshot of the app

How to use

  1. Simply drag-drop your .img file in the top part of the app.
  2. Choose the drive you want to flash.
  3. Click Flash, confirm it, then enter your computer password when prompted (because writing requires elevated privileges).

You can optionally choose to verify that the write succeeded properly.

Anything else?

Not really. This was 100% vibe coded with Claude Opus 5 in case you're wondering. It's a tool, nothing more nothing less.

The download is notarized with my Developer ID so you won't hit any security issues like many other open source apps.

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A simple macOS app to flash .img files to SD card or USB sticks

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