HowTo: Flashing Sonoff T1 US - naugul/Blynk_Sonoff-T1US GitHub Wiki

Welcome to the Blynk_Sonoff-T1US wiki!

First, and without formatting, how to enter flash mode, borrowed from: https://github.com/arendst/Sonoff-Tasmota/wiki/Sonoff-T1-UK,-EU,-and-US

The jump-wire method to enter the flash mode: Jump the wire as attached picture. While keeping the wire connected then plug the FTDI USB to the computer. Wait for 1 to 2 seconds then release the jump-wire. You can start flashing the Sonoff T1-US 3C.

Later, what to flash: The original code was taken from: https://tzapu.com/sonoff-esp8266-control-blynk-ios-android and modified by me to better adjust to my needs...