// USB · Web Serial · Chromium-only

Firmware Updater

Flash the latest expanseElectronics firmware to your device over USB, directly from this page.

Pick your product

Choose which device you're flashing.

Pick a firmware version

The most recent release is tagged "— latest".

Advanced — flash a local .bin file

Bypasses the dropdown above. Useful for beta firmware or your own builds. The selected file is read in your browser; nothing is uploaded.

Connect your device

Plug the device into USB, then click Connect and pick the serial port from the browser dialog. The board's USB-serial adapter usually appears as cu.usbserial-… (macOS) or COM… (Windows).

Not connected

Flash

Erases the current firmware and writes the selected version. Takes about 30 seconds at 115200 baud.

Console log