Flashing Sonoff without soldering header pins.

Sonoff Basic: https://amzn.to/2MC3cAh Jumper Wires: https://amzn.to/2MbaHPF Header Pins: https://amzn.to/2MKcWsq Programmer: https://amzn.to/2IOdsnY ... https://www.youtube.com/watch?v=tPAwE_4jgkw