ESP32 OTA Firmware Update using SIM800L GSM Module | Python Flask OTA Server(GSM IoT Series #6)

Read the Full Guide & Copy the Code: https://iotbhai.io/esp32-ota-gsm-sim8... Update your ESP32 firmware remotely from anywhere in the world using 2G/GPRS data! In this video (GSM IoT Series #6), I show you how to perform an Over-the-Air (OTA) update on an ESP32 using the SIM800L GSM module. Unlike Wi-Fi OTA, cellular updates face high latency and slow speeds. We tackle these challenges by building a custom Python Flask update server and optimizing the ESP32 code to handle small data chunks (256 bytes) for a stable update process. 🚀 What you will learn in this video: ✅ How to set up a Python (Flask) server for OTA version control. ✅ Why you need a VPS (Public IP) vs. a Local Raspberry Pi for GSM OTA. ✅ Connecting ESP32 to the Internet using SIM800L & TinyGSM. ✅ The Fix: Solving "0 Bytes" errors and HTTP Timeouts with Raw HTTP requests. ✅ Hardware tips: Power supply stability and capacitor requirements. ━━━━━━━━━━━━━━━━━━━━━━━━ 🛒 All my recommended parts in one place: 👉 amazon.com/shop/iotbhai ━━━━━━━━━━━━━━━━━━━━━━━━ *Hardware Used:* ESP32 Development Board (38-pin) Buy on Amazon: https://amzn.to/45AKIcy Buy on AliExpress: https://s.click.aliexpress.com/e/_c3z... MicroUSB Cable Buy on Amazon: https://amzn.to/3KTvMPW Buy on AliExpress: https://s.click.aliexpress.com/e/_c3N... ⏱️ Timestamps: [00:00] - Introduction: Why OTA over GSM is difficult [01:18] - Wi-Fi vs. GSM Latency Comparison [01:52] - How the OTA Process Works (Flowchart) [03:05] - Circuit Diagram & Connections (ESP32 + SIM800L) [04:15] - Setting up the Python Update Server (Flask) [06:12] - ESP32 Code Explanation (TinyGSM & HTTP Client) [11:18] - Uploading Binary Firmware to the Server [12:50] - Live Demo: ESP32 Updating over 2G Network [14:30] - Final Result & Verification 📂 Get the Source Code: [https://github.com/ittipu/IoT_Bhai_Yo...] Find Me- Facebook - https://www.facebook.com/profile.php?... Email - [email protected] GitHub - https://github.com/ittipu WhatsApp +8801715497977 Like, comment, and subscribe for more Raspberry Pi, Arduino, ESP32, GSM, GPS, Embedded System & IoT tutorials! #esp32 #ota #github #iot #microcontroller #electronics #firmwareupdate #embeddedsystems #esp32projects #arduino #arduinoproject #arduinoprogramming #esp32ota #iotbhai #esp32wifi #raspberrypi #ESP32 #IoT #OTA #SIM800L #Python #EmbeddedSystems #IoTBhai #IndustrialIoT