I have uploaded the ESP8266 Blink sketch to the Sonoff and it appears to be uploaded successfully. However, the led on the Sonoff does not blink. I have also uploaded a sketch that does a simple serial write but I get nothing in the Serial Monitor.
Has the Sonoff changed since the SuperHouseTV #17 video on Youtube, or am I doing something wrong?
I have uploaded a screenshot of the board settings I am using in the Arduino IDE.