GitHub - arendst/Tasmota: Alternative firmware for ESP8266 and ESP32 based devices with easy configuration using webUI, OTA updates, automation using timers or rules, expandability and entirely local control over MQTT, HTTP, Serial
docs-7.1/Upgrading.md at master · tasmota/docs-7.1 · GitHub
Flashing Tasmota firmware onto Sonoff devices over-the-air: “How-to” using just a terminal and web-browser - CGomesu
Sonoff S31 Smart Plug Review and Tasmota Installation | Adventurous Way
Upgrading - Tasmota
Revert to Tasmota using OTA - ESPHome - Home Assistant Community