Have a data-capable USB-C cable ready (not charge-only)
Close any serial monitors or other apps that may use the port
Put device in bootloader mode (instructions below)
Click Install on this page and select your device
⚠️ IMPORTANT: Bootloader Mode Required
If you're on battery power and already have Simple installed: hold the power button until the device says "Goodbye", then proceed with the steps below.
🔌 Bootloader Mode (USB Plug-In Method)
1. Press and hold the Power button and GEAR button at the same time
2. While holding them, plug the USB-C cable into the device
3. The screen will look "fuzzy" / "pixelated" — this is normal
Requirements
Chrome, Edge, or Opera browser (Firefox not supported)