ESP32 4G OTA Update via AWS S3 | A7670G LTE Module Tutorial

In this video, I show you how to perform an Over-the-Air (OTA) firmware update on an ESP32 using the A7670G 4G LTE module and an AWS S3 Bucket. We will configure the S3 bucket for public access, set up the bucket policy, and flash the ESP32 remotely over the 4G network.

This is the 7th video in our ESP32 4G IoT series. If you are new, please check the setup video first (link below).

⚠️ Prerequisite: Before starting, make sure your modem is wired correctly!
▶️ Watch the Hardware Setup Guide here: https://youtu.be/nEujkim3-HA

📌 Topics Covered:
- ESP32 OTA update using 4G GSM Module
- AWS S3 Bucket file hosting for IoT
- A7670G vs SIM800L (SSL Support)
- Remote firmware update ESP32

⏱️ Timestamps:
[00:00] - Introduction & Project Overview
[00:37] - How the OTA Process Works (Logic Flow)
[01:38] - Circuit Diagram & Setup Info
[02:24] - Creating an AWS S3 Bucket
[04:32] - Configuring S3 Bucket Policy & Permissions
[05:08] - Uploading version.txt to AWS
[05:46] - Modifying ESP32 Code for S3 URLs
[06:36] - Compiling .bin File & Uploading to AWS
[08:50] - Flashing the ESP32 & Testing OTA Update
[10:00] - Final Results & Troubleshooting

📂 Code & Resources:

AWS Bucket Policy Snippet:
{
"Version": "2012-10-17",
"Statement": [
{
"Sid": "PublicReadGetObject",
"Effect": "Allow",
"Principal": "*",
"Action": "s3:GetObject",
"Resource": "arn:aws:s3:::YOUR_BUCKET_NAME/*"
}
]
}

Source Code: https://github.com/ittipu/IoT_Bhai_Youtube_Channel/blob/main/SIMA7670%20With%20ESP32/7.%20ESP32%204G%20OTA%20Update%20Tutorial%20using%20AWS%20S3%20%26%20A7670G/esp32_4G_OTA_Update_using_AWS_S3_and_A7670G/esp32_4G_OTA_Update_using_AWS_S3_and_A7670G.ino
Library Link - https://github.com/lewisxhe/TinyGSM-fork
Website - https://iotbhai.io/
Facebook - https://www.facebook.com/profile.php?id=61565698329253
Email - tipu3001@gmail.com
GitHub - https://github.com/ittipu
WhatsApp +8801715497977

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Видео ESP32 4G OTA Update via AWS S3 | A7670G LTE Module Tutorial канала IoT Bhai