OpenGarage › Forums › OpenGarage Firmware › [Resolved] Downgrade from 1.1.0 to 1.0.4 by mistake › Reply To: [Resolved] Downgrade from 1.1.0 to 1.0.4 by mistake March 27, 2019 at 11:43 pm #1516 RayKeymaster Sorry for being so late on responding — I was out of the country last week for an emergency trip. You are right that it basically just requires 4 wires: 5V, GND, TX, RX. Glad to hear that you figured it out on your own.
