Flash GaggiBre firmware to your display or controller board from the browser. Connect via USB and click Install. Auto mode uses your last known hardware target. Flash a matched pair: controller + display from the same GaggiBre release (do not mix this EEZ build with an old SquareLine display, or the reverse).
Requires Chrome or Edge on a desktop/laptop.
Always flash controller and display from the same release version.
Source: github.com/dulerabbit/GaggiBre