pxt-calliope/docs/device/usb.md

Uploading programs on your micro:bit

While you're writing and testing your programs, you'll mostly be running them in the simulator, but once you've finished your program you can compile it and run it on your micro:bit.

The basic steps are:

1. Connect your micro:bit to your computer via USB
2. Click Download and download the .hex file
3. Copy the .hex file from your computer onto the micro:bit drive

Instructions

Pick the instructions for your operating system and browser:

• Windows - Microsoft Edge
• Windows - Internet Explorer
• Windows - Chrome
• Windows - Firefox
• Mac - Safari
• Mac - Chrome
• Mac - Firefox

~hint

Transfer not working? See some troubleshooting tips.

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