Mastering ESP32 OTA: WiFi, GSM & Cloud Firmware Updates

Part 1 ESP32

Upgrade Your ESP32 Firmware Remotely (OTA) Using GitHub

Update ESP32 devices in the field using a public GitHub repo to host firmware. Learn the OTA flow, versioning and …

Dec 18, 2025 11 min read

Part 2 ESP32

Securing your firmware is critical. In this tutorial, we ditch the public clouds and build a secure, automated Over-the-Air (OTA) …

Dec 28, 2025 63 min read

Part 3 ESP32

Deploying IoT devices is easy, but updating them once they are mounted on a wall is hard. Discover how to …

Jan 01, 2026 9 min read

Part 4 ESP32 SIM800L

Learn how to perform remote OTA firmware updates on ESP32 using the SIM800L GSM module (2G). A complete guide to …

Dec 25, 2025 11 min read